YESHKEYEV, A.; ULBRIKHT, O.; KOSHEKOVA, A. PROPERTIES OF CATEGORICITY FOR KAISER CLASS. Bulletin of Abai KazNPU. Series of Physical and Mathematical sciences, Almaty, Kazakhstan, v. 91, n. 3, p. 29–42, 2025. DOI: 10.51889/2959-5894.2025.91.3.003. Disponível em: https://bulletin-phmath.kaznpu.kz/index.php/ped/article/view/2263. Acesso em: 7 dec. 2025.