Bhardwaj, S., P. A. Khan, R. Atulkar, and P. K. Purohit. “Variability of Geomagnetic Field With Interplanetary Magnetic Field at Low, Mid and High Latitudes”. Journal of Scientific Research 10, no. 2 (May 1, 2018): 133–144. Accessed October 21, 2021. https://www.banglajol.info/index.php/JSR/article/view/34509.