KACZOREK, Tadeusz; BORAWSKI, Kamil. Positivity and cyclicity of descriptor electrical circuits with chain structure. Bulletin of the Polish Academy of Sciences Technical Sciences, [S. l.], v. 70, n. 1, p. e139955, 2022. DOI: 10.24425/bpasts.2021.139955. Disponível em: https://wydawnictwo.pan.pl/index.php/bpasts/article/view/7629. Acesso em: 20 oct. 2026.