https://www.academia.edu/10220866/Old_Coptic_Texts_of_Ritual_Power_Introduction_and_A_womans_complaint_about_neglect_Old_Coptic_Schmidt_Papyrus_in_M_Meyer_et_al_ed_Ancient_Christian_Magic_Coptic_Texts_of_Ritual_Power_HarperSanFrancisco_1994_