@book { Lachgas,
    title = "Lachgas",
    subtitle = "Lehrbuch der Lachgassedierung in Theorie und Praxis",
    author = "Frank G. {Mathers}",
    year = "2016",
    publisher = "Deutscher Ärzteverlag",
    address = "Köln, Deutschland",
    doi = "10.47420/9783769136333",
    url = "https://deutscheraerzteverlag.openpublishing.com/document/390676"
}