B.E. Eshmatov, Sh. Boboxonov, and N. Omonova. “ON THE SOLVABILITY OF PROBLEMS WITH AN OBLIQUE DERIVATIVE FOR A MIXED PARABOLIC-HYPERBOLIC EQUATION”. Web of Scientist: International Scientific Research Journal, vol. 3, no. 3, Mar. 2022, pp. 536-8, https://wos.academiascience.org/index.php/wos/article/view/1106.