@book { DieSeelebeiPlatoPlotinPorphyrundGregorvonNyssa,
    title = "Die Seele bei Plato, Plotin, Porphyr und Gregor von Nyssa",
    author = "Igor {Pochoshajew}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097385"
}