@book { TrendsamMietwohnungsmarktLeipzig,
    title = "Trends am Mietwohnungsmarkt Leipzig",
    author = "Maria {Schulze}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832428402",
    url = "https://m.diplom.de/document/218568"
}