For citations:
Sabirov R.F., Makhotkin A.F., Sakharov Yu.N. Change of acidity of the environment in the process of decomposition of apatitis sulfuric acid. Proceedings of the Voronezh State University of Engineering Technologies. 2019;81(1):325-328. (In Russ.) https://doi.org/10.20914/2310-1202-2019-1-325-328