[1]
V. I. Rabanovych, “On the Decomposition of an Operator into a Sum of Four Idempotents”, Ukr. Mat. Zhurn., vol. 56, no. 3, pp. 419–424, Mar. 2004, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3764