@book { WasistReligion,
    title = "Was ist Religion?",
    author = "Wilhelm-Ludwig {Federlin} and Sven {Lichtenecker} and Vladislav {Serikov}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135627"
}