@book { AgrarianScienceforSustainableResourceManagementinSubSaharanAfrica,
    title = "Agrarian Science for Sustainable Resource Management in Sub-Saharan Africa",
    author = "George {Ouma} and Franz-Theo {Gottwald} and Isabel {Boergen}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02081-6",
    url = "https://www.peterlang.com/document/1054067"
}