Neupane, Rajendra, and Niraj Dhital. “Analysis and Characterization of X-Ray Flare of Mkn 421 Using XMM-Newton Observation 0658801301”. BIBECHANA 20, no. 1 (April 5, 2023): 55–64. Accessed November 21, 2024. https://nepjol.info./index.php/BIBECHANA/article/view/53233.