G. A. Parsadanyan, M. G. Gevorgyan, N. M. Beylerian, and K. V. Grigoryan, “STUDY OF KINETICS AND MECHANISM OF PHOSPHATASE REACTION IN LEACHED CHERNOZEM (BLACK SOIL)”, Proc. YSU B: Chem. Biol. Sci., vol. 41, no. 1 (212), pp. 83–91, Mar. 2007.