Turgut Vanli, Aysel -, and Inan - Unal. “On Complex $\eta $-Einstein Normal Complex Contact Metric Manifolds”. Communications in Mathematics and Applications 8, no. 3 (December 30, 2017): 301–313. Accessed July 22, 2024. https://rgnpublications.com/journals/index.php/cma/article/view/509.