@book { BeyondtheNuclearFamilyFamiliesinaConfigurationalPerspective,
    title = "Beyond the Nuclear Family: Families in a Configurational Perspective",
    author = "Eric {Widmer} and Riitta {Jallinoja}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1104408"
}