GEORGIEVSKA, Slobodanka S. REDUCTION OF A BOUNDARY PROBLEM OF THE THIRD ORDER TO A BOUNDARY PROBLEM OF THE SECOND ORDER. Matematichki Bilten, [S. l.], v. 18, n. 1, p. 87–92, 1994. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1520. Acesso em: 14 aug. 2026.