KON , S. H., and SIN-LENG TAN. “TOTALLY UMBILICAL CR-SUBMANIFOLDS OF A NEARLY KAEHLER MANIFOLD”. Tamkang Journal of Mathematics 27, no. 2 (June 1, 1996): 145–149. Accessed May 4, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4352.