P. N. Pandey, and Reema Verma. “On Ch-Birecurrent Finsler Spaces”. Journal of International Academy of Physical Sciences 2, no. 1-4 (December 15, 1998): 43–50. Accessed May 11, 2024. https://www.iaps.org.in/journal/index.php/journaliaps/article/view/926.