The regions of parametric instability of brush-contact device electromagnetic circuit in unstable working conditions. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 84–88, 2015. DOI: 10.17770/etr2015vol1.218. Disponível em: https://archive-journals.rtu.lv/etr/article/view/3935.. Acesso em: 11 mar. 2026.