WANICHARPICHAT, W.; KHAMBUNLUE, N. กรุปอินเวอร์สของเมทริกซ์ขนาด 3x3 เหนือริง: The Group Inverse of Matrices Over a Ring . Asian Health, Science and Technology Reports, [S. l.], v. 22, n. 3, p. 135–144, 2014. Disponível em: https://ph03.tci-thaijo.org/index.php/ahstr/article/view/2037. Acesso em: 30 aug. 2026.