@book { EconometricAnalysisinPovertyResearch,
    title = "Econometric Analysis in Poverty Research",
    subtitle = "With Case Studies from Developing Countries",
    author = "Johannes {Gräb}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-00480-9",
    url = "https://www.peterlang.com/document/1067397"
}