@book { CriticalSuccessFactorsofMobilePayment,
    title = "Critical Success Factors of Mobile Payment",
    author = "Christian {Hort}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832466435",
    url = "https://m.diplom.de/document/222030"
}