R. N. Singh, Shravan K. Pandey, and Giteshwari Pandey. “On Semi-Symmetric Non-Metric Connections in a Co-Symplectic Manifold”. Journal of International Academy of Physical Sciences 16, no. 1 (March 15, 2012): 27–42. Accessed May 15, 2024. https://www.iaps.org.in/journal/index.php/journaliaps/article/view/271.