@book { TransformationderWirtschaftssystemeinOstmitteleuropa,
    title = "Transformation der Wirtschaftssysteme in Ostmitteleuropa",
    author = "Roland {Schönfeld}",
    year = "1993",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12551",
    url = "https://www.peterlang.com/document/1082624"
}