@book { DieOnlineVideokonferenzimZivilprozess,
    title = "Die Online-Videokonferenz im Zivilprozess",
    author = "Ulf Andreas {Nissen}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097611"
}