ATAMURATOVNA, D. K.; RISBEKOVICH, K. A. Boundary value problem for the third-order equation with multiple characteristics. Annals of Mathematics and Physics, [S. l.], v. 6, n. 1, p. 001–003, 2023. DOI: 10.17352/amp.000067. Disponível em: https://www.peertechzpublications.us/amp/article/view/AMP-6-167. Acesso em: 10 jan. 2025.