Gorbachuk O. L., and Yakonska N. O. “Existence of the Boundary in the Chesaro Sense of a Limited Solution of the Evolution Equation in the Banach Space”. Ukrains’kyi Matematychnyi Zhurnal 44, no. 9 (October 7, 1992): 1279-1280. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/8181.