Tolbatov , Yu. A. “METHODS OF CALCULATION OF OWN VALUES AND OWN VECTORS OF THE MATRIX IN EXCEL SWITCHES”. Problems of Informatization and Management 3, no. 14 (September 30, 2005): 142–149. Accessed April 10, 2026. https://jrnl.kai.edu.ua/index.php/PIU/article/view/16326.