HAYOTULLO G. MAGDIEV. Development of a pole-changeable winding with a pole ratio of 8/4 for multi-speed motors. PROBLEMS OF ENERGY AND SOURCES SAVING, [S. l.], n. 2, p. 162–168, 2026. Disponível em: https://energy.tdtu.uz/index.php/journal/article/view/201. Acesso em: 3 apr. 2026.