[1]
“SPHERICAL 2-DISTANCE SETS WHICH ARE SPHERICAL 3-DESIGNS”, Ann. Sofia Univ. Fac. Math. and Inf., vol. 95, pp. 53–58, Dec. 2003, Accessed: Dec. 15, 2025. [Online]. Available: https://annual.uni-sofia.bg/index.php/fmi/article/view/175