PROF. KATKE SHARDA P.; PROF. LIGADE SANDEEP J. ENERGY CONSERVATION IN TRACTION SYSTEM. International Journal of Innovations in Engineering Research and Technology, Maharashatra, India, p. 1–1, 2021. Disponível em: https://repo.ijiert.org/index.php/ijiert/article/view/1608. Acesso em: 14 aug. 2025.