@book { ChangesintheRussianBankingSystem,
    title = "Changes in the Russian Banking System",
    author = "Martin P. {Kühle}",
    year = "1997",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832403072",
    url = "https://m.diplom.de/document/216292"
}