@book { PerspektivenundProblemesystematischerPhilosophie,
    title = "Perspektiven und Probleme systematischer Philosophie",
    author = "Achim {Engstler} and Hans-Dieter {Klein}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1084373"
}