@book { OriginsofEasternChristianMysticism,
    title = "Origins of Eastern Christian Mysticism",
    subtitle = "AD 330-1022",
    author = "Theodore {Sabo}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/b15430",
    url = "https://www.peterlang.com/document/1058145"
}