ВОЙТИК, Т. Г.; ПОЛЕТАЕВ, Г. С. Justification of conditions for unique solvability of matrix equations with two triangular unknowns and mutually inverse coefficients. Technology audit and production reserves, [S. l.], v. 4, n. 2(30), p. 73–77, 2016. DOI: 10.15587/2312-8372.2016.75969. Disponível em: https://journals.uran.ua/tarp/article/view/75969. Acesso em: 12 may. 2024.