FaghfouriM., and Jazer N. “Shen’s $L$-Process on Berwald Connection”. Ukrains’kyi Matematychnyi Zhurnal 72, no. 8 (August 18, 2020): 1134-1148. Accessed November 23, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/6001.