@book { DerAllgemeineTeildesPrivatrechts,
    title = "Der Allgemeine Teil des Privatrechts",
    author = "Christian {Baldus} and Wojciech {Dajczak}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03070-9",
    url = "https://www.peterlang.com/document/1046462"
}