R. Pavlov, J. Vassileva-Popova, I. Mechev, Modified Huckel LCAO-MO Method for Organic Molecule Analysis with an Electronic Computer and its Application for the Methil Radical Investigation, in: Bioph. and Bioch. Inform. Transfer in Recognition, Ed. E. Jensen, New York-London, Plenum-Press (1978) 49-55

I. Mechev, J. Vassileva-Popova, R. Pavlov, Investigation of Lidol Melatonine, Serotonine, Heteroauxine and Triptophane by Modified Huckel LCAO-MO Method, in: Bioph. and Bioch. Inform. Transfer in Recognition, Ed. E. Jensen, New York-London, Plenum-Press (1978) 57-72

J. Vassileva-Popova, B. Tomov, R. Pavlov and I. Mechev, Could the Receptors Recognizte the Quantum Mechanical Level Parameters, in: Bioph. and Bioch. Inform. Transfer in Recognition, Ed. E. Jensen, New York-London, Plenum-Press (1978) 73-96

J. Vassileva-Popova, N. Vassilev, I. Iliev, B. Tomov, R. Pavlov, I. Zlatanov, An Attempt at Investigation the Possible Correlation Between some Geophysical and Astronomical Parameters and Some Processes of Bioregulation, in: Bioph. and Bioch. Inform. Transfer in Recognition, Ed. E. Jensen, New-York-London, Plenum-Press (1978) 483-496

J. Vassileva-Popova, R. Pavlov, I. Mechev, I. Mladenov, D. Tasseva, A quantum mechanical study on hormonal steroids, Journal of Steroid Biochemistry, Volume 9, Issue 9 (1978) 815

J. Vassileva-Popova, R. Pavlov, I. Mechev, I. Mladenov, D. Tasseva, A quantum mechanical study on hormonal steroids, Journal of Steroid Biochemistry, Volume 9, Issue 9 (1978) 815

Ya. Delchev, R. Pavlov, I. Petkov, Ch. Velchev: A Study of the Kinetic Energy Functional for Atoms, IC (90) 300, ICTP, Trieste р. 25

Ya. Delchev, R. Pavlov, Ch. Velchev: An Energy Density Functional for Atoms: Spin Approach, Compt. Rand. Bulg. Acad. Sci. 44, 11 (1991) 25-28

R. Pavlov, Ya. Delchev: Taking into Account the Non-Ortogonality of Atomic Orbitals for Heteroatomic Molecules in Huckel Method by a Self-Consistent Procedure, Compt. Rand. Bulg. Acad. Sci. 44, 11 (1991) 29

R. Pavlov, Ya. Delchev, K. Pavlova et J. Maruani: Theorie de la fonctionnelle de la densite avec spin. I. Fonctions et matrices densite reduites, C. R. Acad. Sci. Paris, t. 315, serie II (1992) 1315-1318

R. Pavlov, Ya. Delchev, K. Pavlova et J. Maruani: Theorie de la fonctionnelle de la densite avec spin. II. Densites de charge et de spin, C. R. Acad. Sci. Paris, t. 316, serie II (1993) 1051-1054

R. Pavlov, Ya. Delchev, K. Pavlova et J. Maruani: Theorie de la fonctionnelle de la densite avec spin. III. Densites de distribution et de correlation de multiplicites de spin, C. R. Acad. Sci. Paris, t. 316, serie II (1993) 1219-1222

R. Pavlov, Ya. Delchev, K. Pavlova et J. Maruani: Theorie de la fonctionnelle de la densite avec spin. IV. Valeurs moyennes d'operateurs pour des multiplicites de spin, C. R. Acad. Sci. Paris, t. 317, serie II (1993) 1549-1554

R. Pavlov, Ya. Delchev, K. Pavlova and J. Maruani: Spin Тheory of the Density Functional. Reduced Density Fonctions and Matrices, Proc. Bulg. Acad. Sci., 46-2 (1993) 49-52

R. Pavlov, Ya. Delchev, K. Pavlova and J. Maruani: Spin Theory of the Density Functional. Charge and Spin Densities.Electron Correlations, Proc. Bulg. Acad. Sci. 46-5 (1993) 63-66

Ya. Delchev, L. Marinova, J. Maruani, et R. Pavlov: Etudes par une fonctionnelle de la densite semi-classique de l'energie de liaison Hartree-Fock dans les atomes. I. La fonctionnelle energie et la fonction densite, C. R. Acad. Sci. Paris, t. 319, Serie II (1994) 181-186

Ya. Delchev, J. Maruani, R. Pavlov and K. Pavlova: Etudes par une fonctionnelle de la densite semi-classique de l'energie de liaison Hartree-Fock dans les atomes. II. Une evolation des oscillations de la structure en couches, C. R Acad. Sci. Paris, t. 319, Serie II (1994) 277-281

Ya. Delchev, R. Pavlov, K. Pavlova, L. Marinova, J. Maruani: A Semi-classical Density-Functional Splitting of the Hartree-Foch Binding Energy in Atoms: I. An Investigation of the Smoothly Varying Part, C. R. Bul. Acad. Sci., t. 47, s. 12 (1994) 53-56

Ya. Delchev, R. Pavlov, K. Pavlova, L. Marinova and J. Maruani: A Semi-Classical Density-Functional Evaluation of the Smoothly Varying part of the Hartree-Fock Binding Energy in Atoms, Int. J. Quant. Chem., 52 (1994) 1349-1368

Ya. Delchev, R. Pavlov, K. Pavlova, L. Marinova, J. Maruani: A Semi-Classical Density-Functional Splitting of the Hartree-Foch Binding Energy in Atoms: II. Evaluation of the Shell-Structure Effects, C. R. Bul. Acad. Sci. 48 1 (1995) 33-36

R. Pavlov, J. Maruani, Ya. Delchev and F. Zakhariev: Theorie de la fonctionnelle de la densite avec spin. V. La fonctionnelle energie pour des multiplicites de spin: symetries du systeme; energie cinetique, C. R. Acad. Sci. Paris, II 320 (1995) 259-264

R. Pavlov, J. Maruani, Ya. Delchev and F. Zakhariev: Theorie de la fonctionnelle de la densite avec spin. VI. La fonctionnelle energie pour des multiplicites de spin: energie potentielle; fonctionnelle totale, C. R. Acad. Sci. Paris, II 320 (1995) 303-308

R. Pavlov, J. Maruani, Ya. Delchev and L. Georgiev: Theorie de la fonctionnelle de la densite avec spin. VII. Equation d'Euler-Lagrange pour ?(r) C. R. Acad. Sci. Paris, II 321 (1995) 371-376

R. Pavlov, J. Maruani, Ya. Delchev and A. Kuleff: Theorie de la fonctionnelle de la densite avec spin. VIII. Equation d'Euler -Lagrange pour f(r) C. R. Acad. Sci. Paris, 325, Ser.IIb (1997) 719-726

R. Pavlov, J. Maruani, Ya. Delchev and R. McWeeny: Density Functional Theory for Open-Shell Systems using a Local-Scaling Transformation Scheme. I. Single-Density Energy Functional, Int. J. Quant. Chem., 65 (1997) 241-256

R. Pavlov, F. Zakhariev, Ya. Delchev and J. Maruani: Density Functional Theory for Open-Shell Systems Using a Local-Scaling Transformation Sheme. II. Euler-Lagrange Equation for f(r) versus that for ?(r) Int. J. Quant. Chem., 65 (1997) 257-268

L. Georgiev, Ya. Delchev, R. Pavlov and J. Maruani, Core-Valence Separation for an Open-Shell Atom in LST-DFT, in Quantum Systems in Chemistry and Physics, R. McWeeny et al. (eds.) Kluwer Acad. Publ. - Netherlands (1997) 309-321

L. Georgiev, Ya. Delchev, R. Pavlov and J. Maruani: Local-Scaling Transformation in the Effective-Core Approximation for an Open-Shell Atom, J. Molec. Struct. (Theochem) 433 (1998) 35-42

Ya. Delchev, A. Kuleff, J. Maruani and R. Pavlov, A Consistent Calculation of Atomic Energy Shell Corrections: Strutinsky’s Method in the Hartree-Fock-Roothaan Scheme, Adv. Quant. Chem. 31 (1998) 53-74

Ya. Delchev, A. Kuleff, P. Yotov, J. Maruani and R. Pavlov: Orbital Local-Scaling Transformation Approach: Fermionic Systems in the Ground State, Kluwer Acad. Publ., Eds. J. Maruani et al., New trends in Quantum Systems in Chemistry and Physics 1 (2001) 45-61

R. Pavlov, A. Kuleff, P. Yotov, J. Maruani and Ya. Delchev: Reduced Density-Matrix Treatment of Spin-Orbit Interaction Terms in Many-Electron Systems, Progr. Theor. Chem. & Phys. B6 (2001) 63-74

R. Pavlov, A. Kuleff, P. Yotov and J. Maruani: Reduced Density-Matrix Treatment of Spin-Spin Interaction Terms in Many-Electron Systems, Adv. Quantum Chem. 39 (2001) 295-305

Ya. Delchev, A. Kuleff, P. Yotov, J. Maruani and R. Pavlov: Orbital Local-Scaling Transformation Approach: Fermionic Systems in the Ground States, Progr. Theor. Chem. & Phys. B6 (2001) 45-61

R. Pavlov, R. McWeeny, P. Raychev, A. Kuleff and M. Dimitrova-Ivanovich: Electron-Nuclear Spin-Spin and Contact Interactions for Exited and Degenerate States in the Density Matrix Methods, Proc. of the Twentieth International Workshop on Nuclear Theory, 11-16 June, 2001, Rila, Bulgaria, Notre Dame, Indiana, (2001) 183-190

R. Pavlov, P. Raychev, M. Dimitrova-Ivanovich and C. Valdemoro: Hyperfine Interactions of the Nuclear Spin with Electron Systems in the Density Matrix Methods, Journ. Phys. Studies, 5 N3/4 (2001) 246-254

L. Pavlov, S. Pavlova, R. Pavlov, Ya. Delchev: Time-Resolved Photoelectron Spectrometry of a Dephasing Process in Pyrazine, Journ. Phys. Studies, 5 N3 (2001) 255

R. L. Pavlov, L. I. Pavlov, P. P. Raychev, V. P. Garistov and M. Dimitrova-Ivanovich: Hyperfine Electron-Nuclear Interactions in the Frame of the Density Functional and of the Density Matrix Method, in The Proceedings of the Twenty First International Workshop on Nuclear Theory, 1-14 June 2002, ed. by V. Nikolaev, Heron Press, Sofia (2002) p. 358

R. Pavlov, P. Raychev, V. Garistov, M. Dimitrova-Ivanovich and J. Maruani: Nuclear Moments and Electron Density Functionals in Atoms, Int. Journ. Quant. Chem. 99 (2004) 308-316

L. M. Kovachev, N. I. Kaymakanova, D. Y. Dakova, L. I. Pavlov, R. A. Roussev, S. G. Donev, R. L. Pavlov, Three-Dimensional Solutions in Media with Spatial Dependence of Nonlinear Refractive Index, Journal of Physical Studies 8 (2004) 1-4

R. Pavlov, J. Maruani, L. Mihailov, Ch. Velchev, L. Pavlov, M. Dimitrova-Ivanovich and V. Nesterenko, Effects Induced by Nuclear Motion and by Nuclear Structure on the Ground State Energies of 1s-Helium Isoelectronic Series, ed. S. Dimitrova, Proc. XXV International Workshop on Nuclear Theory (2006) 335-347

L. Pavlov, L. Kovachev, D. Dakova, S. Naboko, D. Stoimenova, R. Pavlov, S. Pavlova, I. Tabanliyski, S. Penchev , Effect of parametric processes on the stimulated Raman scattering in fibers, Proceedings of Society Photo-Optical Instrum. Engineering ( SPIE ) 6604 (2007) 66041R.16-20

L. Mihailov, R. Pavlov, Ch. Velchev, L. Pavlov, M. Dimitrova- Ivanovich, J. Maruani, Non-Conventional Optimization Procedure for Mass Effects Investigation in the Ground State Energies of the 1s Core-IonizedHelium-Like Atoms from Helium to Xenon Journal of Optoelectronics and Advanced Materials, 9 (2007) 390-393

R. L. Pavlov, J. Maruani, L. M. Mihailov, Ch. J. Velchev and M. Dimitrova- Ivanovich, Electron Correlation and Nuclear Motion Corrections to the Ground-State Energy of Helium Isoelectronic Ions, from Li to Kr , In: Progress in Theoretical Chemistry and Physics: V. Frontiers in Quantum Systems in Chemistry end Physics, St. Wilson and J. Maruani (Eds) 257-272, 2008, Springer, The Netherlands

R. Pavlov, J. Maruani, L. Mihailov, Ch. Velchev, M. Dimitrova-Ivanovich, J. Stoianov and D. Van Neck , Multiply Charged Helium Isoelectronic Ions with Charge Z to 118:I. Ground State Energies, MassCorrections, Mass Polarization, Ed. S. Dimitrova, Proceedengs of the 27 Intenernatoinal Workshop on the Nuclear Theory, parth VI Advanced Studies of Many-fermion Systems, 23-28 June 2008, Rila Mountains, Bulgaria, 249-260

R. Pavlov, L. Mihailov, Ch. Velchev, M. Dimitrova-Ivanovich, Zh. Stoyanov, N. Chamel and J. Maruani, Effects induced by nuclear deformations and electron correlations on the ground-state energy of low and multiply charged helium like ions in high-temperature plasmas, Journal of Physics CS 253 012075 (R Pavlov et al 2010 J. Phys.: Conf. Ser. 253 012075 doi:10.1088/1742-6596/253/1/012075)

N. Chamel, R.Pavlov, L. Mihailov, Ch. Velchev, Zh. Stoyanov,Y. Mutafchieva, M. Ivanovich, Effects of strong magnetic fields on the equation of state of cold non-accreting neutron-star crusts Proc. XXX International Workshop on Nuclear Theory, 30 Intenernatoinal Workshop on Nuclear Theory, 27 June – 01 July 2011, Rila Mountains, Bulgaria, 30 (2011) 240-246

N. Chamel, R.L. Pavlov, L.M. Mihailov, Ch.J. Velchev, Zh.K. Stoyanov,Y.D. Mutafchieva, and M.D. Ivanovich, Outer crust of strongly magnetized neutron stars for Hartree-Fock-Bogoliubov mass models, Phys. Rev. C 86 (2012) 055804-055814 ISSN: 0556-2813

N. Chamel, R.L. Pavlov, L.M. Mihailov, Ch.J. Velchev, Zh.K. Stoyanov,Y.D. Mutafchieva, and M.D. Ivanovich, Eqiation Internal Structure and composition of magnetar crusts with Hartree-Fock-Bogolubov Atomic mass Models, Proceedings of the 31 Intenernatoinal Workshop on Nuclear Theory, June, 24-30 2012, Rila Mountains, Bulgaria, 31 (2012) 259-267; ISSN: 1313-2822

N. Chamel, R. Pavlov, L. Mihailov, Ch. Velchev, Zh. Stoyanov, Y. Mutafchieva, M. Ivanovich, A. Fantina, J. Pearson and S. Goriely. Unified description of dense matter in neutron stars and magnetars. Proceedings of the International Astronomical Union, Volume 8, Issue S291 "Neutron Stars and Pulsars: Challenges and Opportunities after 80 years", Ed. Joeri van Leeuwen, August 20-31, 2012 Beijing, China Nanjing, Cambridge University Press, 359-361 (2013)

N. Chamel, R. Pavlov, L. Mihailov, Ch. Velchev, Zh. Stoyanov, Y. Mutafchieva, M. Ivanovich, A. Fantina, J. Pearson and S. Goriely. Equation of State of Magnetar Crusts from Hartree-Fock-Bogoliubov Atomic Mass Models. Electromagnetic Radiation from Pulsars and Magnetars, ASP Conference Series, 466, Eds. W. Lewandowski, J. Kijak, A. Slowikowska and O. Maron, 249-250 (2013) (Предварително публикувано в arXiv:1210.1668v1 [astro-ph.HE] Oct. 5, 2012)

N. Chamel, R. Pavlov, L. Mihailov, Ch. Velchev, Zh. Stoyanov, Y. Mutafchieva, M. Ivanovich, Exotic Nuclei in the Crust of Magnetars. Bulg. J. Phys, 40(4) 275-280 (2013)

Ch. Velchev, R. Pavlov, L. Mihailov, N. Chamel, Zh. Stoyanov, Y. Mutafchieva, M. Ivanovich, Correlation effects of heliumoid electron-nuclear systems. Comptes rendus de l'Academie Bulgare des Sciences, 67(11) 1513-20 (2014)

N. Chamel, Zh. Stoyanov, L. Mihailov, Y. Mutafchieva, R. Pavlov, Ch. Velchev. Role of Landau quantization on the neutron-drip transition in magnetar crusts. Phys. Rev. C, 91(6) 065801 (2015)

N. Chamel, A. Fantina, L. Mihailov, Zh. Stoyanov, Y. Mutafchieva, D. Pena Arteaga, R. Pavlov, Ch. Velchev. Electron Captures and Neutron Emissions in Magnetic White Dwarfs and Magnetars. Nuclear Theory, 34, Eds. M. Gaidarov, N. Minkov, Heron Press, Sofia , 83-92 (2015)

A. Fantina, N. Chamel, Y. Mutafchieva, Zh. Stoyanov, L. Mihailov, J. Pearson, R. Pavlov. Role of the symmetry energy on the neutron-drip transition in accreting and nonaccreting neutron stars. Phys. Rev. C, 93(1) 015801 (2016)

N. Chamel, Y. Mutafchieva, Zh. Stoyanov, L. Mihailov, R. Pavlov. Landau quantization and neutron emissions by nuclei in the crust of a magnetar. J. Phys. CS 724, 012034 (2016)

Zh. Stoyanov, R. Pavlov, L. Mihailov, Ch. Velchev, Y. Mutafchieva, D. Tonev, N. Chamel. Nuclear induced effects and mass correlations in low and multiply charged helium-like ions. J. Phys. CS 724, 012048 (2016)

N. Chamel, Y. Mutafchieva, Zh. Stoyanov, L. Mihailov, R. Pavlov. Landau Quantisation of Electron Motion in the Crust of Highly Magnetised Neutron Stars. In: Progress in Theoretical Chemistry and Physics. Quantum Systems in Physics, Chemistry, and Biology: Selected Proceedings of QSCP-XX (in print)

Ch. J. Velchev, R. Pavlov, D. Tonev, Zh. Stoyanov, L. Mihailov, Y. Mutafchieva, D. Van Neck. Effects of Isotope Characteristics on the Electron System Ground State Energy of Helium-like Ions. In: Progress in Theoretical Chemistry and Physics. Quantum Systems in Physics, Chemistry, and Biology: Selected Proceedings of QSCP-XX (in print)