@book { TheodorEchtermeyer18051844,
    title = "Theodor Echtermeyer (1805-1844)",
    author = "Martin {Hundt}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01486-0",
    url = "https://www.peterlang.com/document/1047275"
}