@book { VorlesungberNaturphilosophieBerlin182122,
    title = "Vorlesung über Naturphilosophie- Berlin 1821/22",
    author = "Thomas {Posch} and Gilles {Marmasse}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093431"
}