Ivasyshen, S. D., & Ivasyuk, H. P. (2009). Correct solvability of Solonnikov–Eidel’man parabolic initial-value problems. Ukrains’kyi Matematychnyi Zhurnal, 61(5), 650-671. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/3048