TRENČEVSKI, Kostadin. ON THE ORIENTABILITY OF THE GRASSMANN MANIFOLDS. Matematichki Bilten, [S. l.], v. 21, n. 1, p. 43–50, 1997. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1576. Acesso em: 14 aug. 2026.