@book { TheSovietdebateonreligioninthe1920sPrincipalpositions,
    title = "The Soviet debate on religion in the 1920s. Principal positions",
    author = "Christopher {Selbach}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638213219",
    url = "https://www.hausarbeiten.de/document/16467"
}