S. Aslanci, S. Kazimova, and A. A. Salimov, “Some remarks concerning Riemannian extensions”, Ukr. Mat. Zhurn., vol. 62, no. 5, pp. 579–590, May 2010, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2889