BERDYSHEV, A.S.; HASANOV, A.; RYSKAN, A.R. Decomposition formulas for some quadruple hypergeometric series. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 100, n. 4, p. 43–54, 2020. DOI: 10.31489/2020m4/43-54. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/380. Acesso em: 4 sep. 2025.