Осипчук, Михайло Михайлович. “DIFFUSION PROCESSES AND SOME METHODS OF THEIR CONSTRUCTION AND APPLICATIONS”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 1(1), Mar. 2019, pp. 31-36, https://pvntsh.nung.edu.ua/index.php/number/article/view/339.