PIPEREVSKI, Boro M. ON A LAME DIFFERENTIAL EQUATION. Matematichki Bilten, [S. l.], v. 30, n. 1, p. 63–70, 2006. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1726. Acesso em: 14 aug. 2026.