@book { AgricultureandFoodinthe21stCentury,
    title = "Agriculture and Food in the 21 st  Century",
    author = "Monika {Hartmann} and Joachim {Hesse}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03559-9",
    url = "https://www.peterlang.com/document/1048102"
}