@book { EingemeinsamerMarktfrElektrizittinEuropa,
    title = "Ein gemeinsamer Markt für Elektrizität in Europa",
    author = "Rüdiger {Hermann}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13683",
    url = "https://www.peterlang.com/document/1068271"
}