Petkova D., Momchilova A.B., Hinkovska V.T., Koumanov K.S. (1987) Age-related changes of rat liver plasma membrane alkaline phosphatase - C.R. Acad. bulg. Sci. 40, 125-128.

Momchilova A.B., Petkova D.H., Koumanov K.S. (1987) Influence of ageing on the physicochemical properties of rat liver microsomal membranes - C.R. Acad. bulg. Sci. 40, 111- 112.

Petkova D., Momchilova-Pankova A., Koumanov K. (1987) Age and sex-related changes in rat liver plasma membrane 5'-nucleotidase - C.R. Acad. bulg. Sci. 40, 91-93.

Petkova D.H., Momchilova A.B., Markovska T.T., Koumanov K.S. (1987) D-Galactosamine induced changes in rat liver plasma membranes lipid composition and some enzyme activities - Int. J. Biochem. 19, 289-291.

Petkova D.H., Momchilova-Pankova A.B., Koumanov K.S. (1987) Effect of membrane fluidity on endogenous liver plasma membrane phospholipase A2 activity - Biochimie 69, 1251-1255.

Hinkovska V.T., Momchilova A.B., Petkova D.H., Koumanov K.S. (1987) Phospholipase A2 activity in rat spermatozoa plasma membranes - Int. J. Biochem. 19, 569-572.

Hinkovska V.T., Petkova D.H., Koumanov K.S. (1987) A neutral sphingomyelinase in spermatozoa plasma membranes - Can. J. Biochem. Cell Biol. 65, 525-528.

Momchilova A., Petkova D., Koumanov K. (1986) Rat liver microsomal phospholipase A2 and membrane fluidity - Int. J. Biochem. 18, 659-664.

Koumanov K., Infante R. (1986) Phospholipid-transfer proteins in human liver and primary liver carcinoma - Biochim. Biophys. Acta 876, 526-533.

Momchilova A., Petkova D., Koumanov K. (1986) Phospholipid modifications influence phospholipase A2 activity in rat liver plasma membranes - Int. J. Biochem. 18, 945-952.

Petkova D., Momchilova A., Koumanov K. (1986) Age-related changes in rat liver plasma membrane phospholipase A2 activity - Exp. Gerontol. 21, 187-193.

Petkova D.H., Momchilova A.B., Koumanov K.S. (1986) Phospholipid dependence of neutral sphingomyelinase in rat liver plasma membranes - Biochimie 68, 1195-1200.

Hinkovska V.T., Dimitrov G.P., Koumanov K.S. (1986) Phospholipid composition and phospholipid asymmetry of ram spermatozoa plasma membranes - Int. J. Biochem. 18, 1115-1121.

Yanev E., Momchilova A., Koumanov K., Novelli G.P., Nicolov N. (1986) N-t-butyl-a-phenylnitrone antioxidant effect on the alterations in phospholipid composition of alveolar surfactant and lung in endotoxin shock rats - In: "Oxygen free radicals in shock", Int. Workshop (Novelli, Ursini eds.), Florence, Karger, Basel, pp.193-196.

Markivska T., Koumanov K., Chelibonova-Lorer H., Gavazova E. (1986) Colchicine-influence on the activity of phospholipid-transfer proteins in chicken liver and Mc-29 hepatoma - C.R. Acad. bulg. Sci. 39, 107-110.

Momchilova A.B., Petkova D.H., Koumanov K.S. (1986) Investigation of the phospho- lipid dependence of phospholipase A2 in rat liver microsomal membranes by the aid of lipid transfer protein - C.R. Acad. bulg. Sci. 39,131-134.

Hinkovska V.T., Koumanov K.S. (1986) Isolation and characteristics of plasma membranes of ram spermatozoa - C.R. Acad. bulg. Sci. 39, 103-106.

Koumanov K., Petkova D., Momchilova A., Dimitrov G. (1985) Diet induced modifications in phospholipid and fatty acid composition of rat liver mitochondrial membranes - C.R. Acad. bulg. Sci. 38, 397-400.