@book { DieVerwirkungdesUnterlassungsanspruchsimMarkenrecht,
    title = "Die Verwirkung des Unterlassungsanspruchs im Markenrecht",
    author = "Mathias {Kochendörfer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1090350"
}