Бігун, Галина Степанівна, and Михайло Михайлович Осипчук. “THE EXPLICIT FORM OF THE FUNDAMENTAL SOLUTION OF ONE PSEUDO-DIFFERENTIAL EQUATION WITH CONSTANT COEFFICIENTS”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 1(29), Feb. 2019, pp. 123-31, https://pvntsh.nung.edu.ua/index.php/number/article/view/148.