TRENČEVSKI, K. ON THE STRICTLY PARALLEL SUBBUNDLES OF VECTOR BUNDLES. Matematichki Bilten, [S. l.], v. 15, n. 1, p. 17–21, 1991. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1972. Acesso em: 4 sep. 2026.