“Necessary and Sufficient Conditions for the Well-Posed Solvability of a Boundary Value Problem for a Linear Loaded Hyperbolic Equation”. 2021. ҚазҰУ Хабаршысы. Математика, механика, информатика сериясы 112 (4). https://doi.org/10.26577/JMMCS.2021.v112.i4.01.