BALCIUNAS, P.; ADOMAVICIUS, V. Renewable Energy Conversion Problems and their Solving Methods. Elektronika ir Elektrotechnika, [S. l.], v. 22, n. 4, 1999. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/16712. Acesso em: 4 may. 2024.