Shrirao , Nisha Milind, and Shital Kewte. “Hybrid Propulsion Systems for Rail and Emerging Transit ‎Vehicles: Challenges and Opportunities”. International Journal of Basic and Applied Sciences 14, no. SI-1 (July 8, 2025): 38–41. Accessed December 5, 2025. https://www.sciencepubco.com/index.php/IJBAS/article/view/33571.