@book { konomischeVerfahrenimNaturschutz,
    title = "Ökonomische Verfahren im Naturschutz",
    author = "Ulrich {Enneking}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1087327"
}