@book { DieTheoriedesgeistlichenLebensinderVitaMoysisdesGregorvonNyssa,
    title = "Die Theorie des geistlichen Lebens in der «Vita Moysis» des Gregor von Nyssa",
    author = "Matthias {Gran}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1103883"
}