B. BEKBOLAT; D. B. NURAKHMETOV; N. TOKMAGAMBETOV; G. H. AIMAL RASA. ON THE MINIMALITY OF SYSTEMS OF ROOT FUNCTIONS OF THE LAPLACE OPERATOR IN THE PUNCTURED DOMAIN. Известия НАН РК. Серия физико-математическая, [S. l.], n. 4, p. 92–109, 2019. Disponível em: https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1680. Acesso em: 23 ноя. 2024.