Gulash, Koshanova, Mamaeva Venera, kuanbayeva Bayan, Kokazhaeva Amangul, and Laura Bissenbayeva. 2020. “Boundary Value Problems in Math Specialist Competence Development”. International Journal of Psychosocial Rehabilitation 24 (7): 9853-57. https://doi.org/10.61841/2x1zgf23.