@book { DieersteSchriftzurVergleichendenErziehungswissenschaftTheFirstTreatiseinComparativeEducation,
    title = "Die erste Schrift zur Vergleichenden Erziehungswissenschaft/The First Treatise in Comparative Education",
    author = "Volker {Lenhart}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-05947-2",
    url = "https://www.peterlang.com/document/1049636"
}