PYLYPAKA, S.F.; NESVIDOMIN, V.M.; KLENDII, M.B.; ROGOVSKII, I.L.; KRESAN, T.A.; TROKHANIAK, V.I. Conveyance of a particle by a vertical screw, which is limited by a coaxial fixed cylinder. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 95, n. 3, p. 108–119, 2019. DOI: 10.31489/2019m2/108-119. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/311. Acesso em: 10 jul. 2025.