@book { CoachingPraxisimGrenzbereichesoterischerMethoden,
    title = "Coaching-Praxis im Grenzbereich esoterischer Methoden",
    author = "Torsten {Tessin}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832412791",
    url = "https://m.diplom.de/document/217191"
}