“ON SIX-DIMENSIONAL HERMITIAN SUBMANIFOLDS OF CAYLEY ALGEBRA SATISFYING THE $G$-COSYMPLECTIC HYPERSURFACES AXIOM”. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics 94 (December 12, 2002): 91–96. Accessed February 4, 2026. https://annual.uni-sofia.bg/index.php/fmi/article/view/193.