Abbasi, Mubashir Ul-Haq, and Sreeramula Rajeswara Sarma. “An Astrolabe by Muhammad Muqim of Lahore Dated 1047 AH (1637–38 CE)”. Islamic Studies 53, no. 1-2 (May 14, 2018). Accessed April 19, 2024. http://irigs.iiu.edu.pk:64447/ojs/index.php/islamicstudies/article/view/178.