A. G. Petrov, I. Bivas, Elastic and Flexoelectric Aspects of Out-of-Plane Fluctuations in Biological and Model Membranes. Progress in Surface Science, 16 (4) 389 (1984)

J. Genova, I. Bivas, and R. Marinov, Cholesterol Influence on the Elastic Properties of Lipid Membranes, Colloids and Surfaces A: Physicochem. and Engineering Aspects (460) 79 (2014)

I. Bivas, L. Bivolarski, M. Mitov, A. Derzhanski, Correlations between the form fluctuation modes of flaccid quasispherical lipid vesicles and their role in the calculation of the curvature elastic modulus of the vesicle membrane. Numerical results, J. Phys. II France (2) 1423 (1992)

K. Hristova, I. Bivas, A. G. Petrov, A. Derzhanski, Influence of the electric double layers of the membrane on the value of its flexoelectric coefficient, Mol. Cryst. Liq. Cryst. (200) 71-77 (1991)

A. G. Petrov, I. Bivas, Elastic and flexoelectric aspects of out-of-plane fluctuations in biological and model membranes, Progress in Surface Sci., Ed. S. Davison, 16, 389-512 (1984)

I. Bivas, A. G. Petrov, Flexoelectric and steric interactions between two lipid bilayer membranes resulting from their curvature fluctuations, J. theor. Biol. 88, 459-483 (1981)

I. Bivas, A. Derzhanski, Statistical Mechanical Theory for Hydrophobic Core of Lipid Bilayer, Mol. Cryst. Liquid Crystals (74) 1771 (1981)

A. Derzhanski, A. G. Petrov, I. Bivas, Molecular asymmetry, flexoelectricity and elasticity of nematics, Advances in Liq. Cryst. Res. and Appl., Ed. L. Bata, Pergamon Press, Oxford - Akad. Kiado, Budapest, vol. 1, p. 505 (1980)

A. Derzhanski, A. G. Petrov, I. Bivas, One-dimensional approach to the spontaneous deformations in nematic liquid crystals, Compt. rend. Acad. bulg. Sci. (28) 1327 (1975)