“Parabolic Boundary-Value Problems in a Piecewise Homogeneous Wedge-Shaped Cylindrically Circular Space”. Neliniini Kolyvannya 23, no. 3 (September 29, 2020): 332–342. Accessed December 6, 2025. https://twinhead.imath.kiev.ua/index.php/nosc/article/view/994.