STANZHYTSKYI, O.; UTESHOVA, R. A risk model for insurance companies on time scales. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 122, n. 2, p. 149–165, 2026. DOI: 10.31489/2026m2/149-165. Disponível em: https://mts.buketov.edu.kz/mathematics-vestnik/article/view/722. Acesso em: 7 jul. 2026.