Dzhamalov, S. Z. (2019). Correctness of one nonlocal boundary-value problem with constant coefficient
for the nonlinear mixed-type equation of the second kind of the second order in the space. *Ukrainsâ€™kyi Matematychnyi Zhurnal*, *71*(1), 47-58. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/1418