BHAGWAT PRASAD. Invariant Submanifolds of a Pseudo Normal Nearly Co-symplectic Manifold. Journal of International Academy of Physical Sciences, [S. l.], v. 2, n. 1-4, p. 73–78, 1998. Disponível em: https://www.iaps.org.in/journal/index.php/journaliaps/article/view/705. Acesso em: 12 may. 2024.