Mladenov I., Saxon-Hutner Theorem for Periodic Multilayers, C. R. Acad. Bulg. Sci. 40 (1987) 35-38.

Mladenov I. and Tsanov V., Geometric Quantization of the MIC-Kepler Problem, J. Physics A : Math. Gen. 20 (1987) 5865-5871.

Tashkova M. and Mladenov I., Relativistic Above Barrier Transmission for One-Dimensional Nonhomogeneous Model System, C. R. Acad. Bulg. Sci. 40 (1987) 55-58.

Tsanov V. and Mladenov I., Geometric Quantization of Geodesic Flow on S^n.  In: Differential Geometric Methods of Theoretical Physics, World Scientific, Singapore, 1986, pp 17-23.

Mladenov I. and Tsanov V., A Remark on Geometric Quantization, C. R. Acad. Bulg. Sci.   39 (1986) 35-38.

Mladenov I., Raychev P. and Roussev R., Geometric Quantization of a Restricted Symplectic Model of Collective Nuclear Motion,  Bulg.  J.  Phys. 13 (1986) 13-26.

Tashkova M., Mladenov I., Primatarova M. and Atanasov B., Simple Models of Structurally Determined Electron Tunneling Through Mioglobin, C. R. Acad. Bulg. Sci. 38 (1985) 1149-1152.

Mladenov I., On the Saxon-Hutner Theorem, C. R. Bulg. Acad. Sci. 38 (1985) 993-996.

Mladenov I. and Tsanov V., Geometric Quantization of the Multidimensional Kepler Problem,  J. Geom. Phys.  2 (1985) 17-24.

Tashkova M., Mladenov I., Atanasov B. and Kandilarov B., Tunneling Through Non-homogeneous Model Systems, C. R. Acad. Bulg. Sci. 37 (1984) 1019-1022.

Mladenov I. and Vassileva J., A Note on Hibridization, Commun. Math. Chem. 11 (1981) 69-73

Mladenov I.,  Kotarov M. and Vassileva J., Method for Computing the Characteristic Polynomial,  Int. J. Quantum Chem. 18 (1980) 339-341