@book { RegulierungdesLobbyismus,
    title = "Regulierung des Lobbyismus",
    author = "Marcel {Michaelis}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14558",
    url = "https://www.peterlang.com/document/1057142"
}