@book { MotivationsundsystemtheoretischeKonzepte,
    title = "Motivations- und systemtheoretische Konzepte",
    author = "Johann {Reiter} and Ursula {Kriebisch-Satori}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092226"
}