Bergman, A.; Metso, P. Kaksi eri suuntiin vievää tutkimusta naisdiakoneista: Brian Patrick Mitchell, The Disappearing Deaconess: Why the Church Had Deaconesses and Then Stopped Having Them. Eremía Publications 2021, 102 s. & John Chryssavgis, Niki Papageorgiou, Marilyn Rouvelas & Petros Vassiliadis (toim.), Deaconesses. A Tradition for Today and Tomorrow. Holy Cross Orthodox Press: Brookline 2023, 346 s. ortodoksia 2024, 64, 137-141.