Solonukha, O.V. “On the Existence of a Generalized Solution of One Partial Differential System”. Ukrains’kyi Matematychnyi Zhurnal 54, no. 9 (September 25, 2002): 1250-1264. Accessed May 11, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4163.