Gamini, Amirmohamad. 2022. “The Principle of Simplicity in the Hayʾa Books : A Revision to the Motivations Behind the Development of Non-Ptolemaic Planetary Models”. Sophia Perennis (Jāvīdān Khirad) 18 (40): 229-58. https://journalsirip.com/index.php/javidankherad/article/view/840.