V. R. Chavda, T. S. Raol, and A. B. Patel. 2015. “A REVIEW : LIQUID COOLING CRYOGENIC TECHNOLOGY OF HTS (HIGH TEMPERATURE SUPERCONDUCTING) TRANSFORMERS”. International Journal of Advance Engineering and Research Development (IJAERD) 2 (5):881-86. https://ijaerd.com/index.php/IJAERD/article/view/1110.