@book { FerdinandJuliusCohn18281898,
    title = "Ferdinand Julius Cohn 1828-1898",
    author = "Margot {Klemm}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096291"
}