@book { SergejEseninBilderundSymbolwelt,
    title = "Sergej Esenin - Bilder- und Symbolwelt",
    author = "Christiane {Auras}",
    year = "1965",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12351",
    url = "https://www.peterlang.com/document/1066841"
}