@book { MediationinWandelzeiten,
    title = "Mediation in Wandelzeiten",
    author = "Claude-Hélène {Mayer} and Elisabeth {Vanderheiden}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06482-7",
    url = "https://www.peterlang.com/document/1050056"
}