Adhikari, B., R. Khatiwada, and N. Chapagain. “Analysis of Geomagnetic Storms Using Wavelet Transforms”. Journal of Nepal Physical Society 4, no. 1 (May 22, 2017): 119-124. Accessed September 24, 2020. https://www.nepjol.info/index.php/JNPhysSoc/article/view/17346.