[1]
D. Y. Yakymenko and Y. S. Samoilenko, “On $n$-tuples of subspaces in linear and unitary spaces”, MFAT, vol. 15, no. 1, pp. 48–60, Mar. 2009, Accessed: Dec. 16, 2025. [Online]. Available: https://zen.imath.kiev.ua/index.php/mfat/article/view/408