For citations:

Usmanov K.I., Nazarova K.Zh., Тurganbaeva Zh. SOLVABILITY OF A BOUNDARY VALUE PROBLEM OF THE SAMARSKY-IONKIN TYPE FOR DIFFERENTIAL EQUATIONS WITH INVOLUTION. Herald of the Kazakh-British technical university. 2025;22(1):173-183. (In Russ.) https://doi.org/10.55452/1998-6688-2025-22-1-173-183