POLYAH, O. M. Use matrices and counts in calculations of electrical systems. Science and Transport Progress , [S. l.], n. 42, p. 133–137, 2012. DOI: 10.15802/stp2012/9303. Disponível em: https://stp.ust.edu.ua/article/view/9303. Acesso em: 4 may. 2024.