Parsadanyan, G. A., et al. “STUDY OF KINETICS AND MECHANISM OF PHOSPHATASE REACTION IN LEACHED CHERNOZEM (BLACK SOIL)”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 41, no. 1 (212), Mar. 2007, pp. 83-91, doi:10.46991/PYSU:B/2007.41.1.083.