Assoc. Prof. Youssef attained a Ph.D. from the University of Montpellier, France, in 1993. As well as being an adjunct lecturer at SAC, he is also a senior research associate at the Centre for Early Christian Studies at the Australian Catholic University, and a senior research fellow of the Centre for Classics and Archaeology at the University of Melbourne. He frequently lectures at the Higher Institute of Coptic Studies in Cairo and is currently a Senior Lecturer at Sankt Ignatios Theological Seminary in Stockholm. A prolific writer who has authored a number of publications, his areas of interest include Patristics, Hagiography, Dogmatic Theology, and Christian-Arabic Studies.
Interpretations of the Theotokias by the Patriarch John Ibn Qiddis. Gorgias Eastern Christian Studies 53 (New Jersey: Gorgias Press, 2020).
The Rite of Consecration of the Myron, Textes et documents 18 (Cairo: Société d’Archéologie Copte, 2017).
With John D’Alton eds. Severus of Antioch, his life and times, Texts and Studies in Eastern Christianity 7 (Leiden: Brill, 2016).
Selected peer-reviewed journals/book chapters
“Coptic liturgical texts relating to Agathon the Stylite,” Cuestiones Teológicas 48, Issue 109 (2021): 147-163.
“Coptic Liturgical texts relating to Saint John of Heraclia,” Coptica Alexandrina 1 (2021): 53-70.
“Pope Mark VIII (1796-1809) the Author of Psalis for St Mark” Copts in Modernity -Proceedings of the 5th International Symposium of Coptic Studies, Melbourne, 13-16 July 2018. L. Agaiby, M. Swanson and N. van Doorn-Harder (eds). Texts and Studies in Eastern Christianity 22 (Leiden-Boston, 2021), pp. 81-105.
“Alexandria and the Martyrs,” Christianity and Monasticism in Alexandria and Environs and the Egyptian Deserts, Gawdat Gabra and Hany N. Takla (eds.), Saint Mark Foundation (Cairo- New York: American University in Cairo Press, 2020), 193-203.
With Daniel Oltean. “Ascèse et liturgie dans l’Orient Chrétien. Coutumes monastiques à l’enfermement d’un reclus”, Zeitschrift für Antikes Christentum/Journal of Ancient Christianity 24 /3 (2020): 585-605.
“Comparing the Holy Liturgy between Copts and Hellènes,” Journal of the Hellenic Institute of Egyptology 3 (2020): 169-182.
“Gregory the Armenian in Coptic Liturgical texts,”Armenia between Byzantium and the Orient, Celebratin the Memony of Karen Ysbashyan (1888-1969), B. Outtier, C. Horn, B. Lourié and A. Ostrovsky (eds). Texts and Studies in Eastern Christianity 20 (Leiden Boston: Brill, 2020), 633-648.
“Liturgical texts relating to the first Council of Ephesus (431): The origin of the date of 12th of Tūt in the Coptic Calendar,” Collectanea Christiana Orientalia 17 (2020): 273-297.
“The commemoration of the council of Alexandria on the third of Tūt in Coptic liturgical texts,” Ephemerides Liturgicae 134 (2020): 192-201.
“The feast of circumcision in the Coptic tradition,” Oriens Christianus 103 (2020): 171-187.
“Zacharias the Priest between liturgical Texts and Images,” Abgadiyat 15 (2020): 108-118.
“A homily on Saint Shenoute ascribed to Saint Cyril,” Coptica 18 (2019): 73-84.
“The liturgical texts relating to Saint Apater,” Bulletin de la Société d’Archéologie Copte 57 (2019): 119-137.
“La lettre de Denys l’Aréopagite à Timothée comme texte liturgique,” Between the Cross and the crescent, studies in honour of Samir Khalil, S. J. on the occasion of his Eightieth birthday, Z. Pasa (ed.) Orientalia Christiana Analecta 304 (Rome: PIO, 2018), 279-288.
With Hieromonk Abraham Guirguis. “Poeikon in the Coptic Liturgy,” Bulletin de la Société d’Archéologie Copte 57 (2018): 35-50.