Sarria Zapata, Humberto. “SYMMETRIC MATRICES, SKEWSYMMETRIC MATRICES, AND HERMITIAN MATRICES. SOME LINEAR PRESERVER PROBLEMS”. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales 26, no. 99 (June 24, 2002): 261–270. Accessed November 5, 2026. https://raccefyn.co/index.php/raccefyn/article/view/2726.