Hujjat al-Islam Dr. Mahdī Yūsufīyān (Persian: مهدی یوسفیان) gained his MA in Theology and Islamic Studies from the University of Qom. He is also a graduate of Hawza who has taken classes with great scholars such as Husayn Wahid Khurasani, Mirza Jawad Tabrizi, Sayyid Musa Shubayri Zanjani and Nasir Makarim Shirazi. As a teacher in both Hawza and university, he has been a supervisor and advisor on several thesis projects. He has authored works, including: Sharayit-e Zuhur (conditions of reappearance), Qa'ida-ye Lutf wa Ithbat-e Wujud-e Imam-e Hayy (lit. Lutf principle and proof for the existence of alive Imam), Barrasi-ye Barkhi Adilla-ye Riwa'i-ye Ahmad Basri, Yamani-ye Durughin (lit. a review on some narrations regarding Ahmad Basri, the false Yamani), Ghaybat-e Imam Mahdi (lit. the occultation of Imam Mahdi (a)), Rukhdadha-ye Zuhur (lit. events of the reappearance of Imam Mahdi), Imam Mahdi dar Qur'an, Tulu'-e Khurshid (lit. the sunrise), and co-authored Nigin-e Afarinish (lit. signet of the creation).