For citations:

Shishcky Y.I., Pluykha S.Yu. MATHEMATICAL MODEL OF PROCESS OF EXTRACTION TAKEN SUBSTANCES FROM RAW MATERIALS IN THE FORM OF SPHERE. Proceedings of the Voronezh State University of Engineering Technologies. 2012;(1):68-72. (In Russ.) https://doi.org/10.20914/2310-1202-2012-1-68-72