@book { UntersuchungenzurMarkenrechtsfhigkeitderBGBGesellschaft,
    title = "Untersuchungen zur Markenrechtsfähigkeit der BGB-Gesellschaft",
    author = "Mathias {Kapitza}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03130-0",
    url = "https://www.peterlang.com/document/1054045"
}