@book { DemographischerWandelHerausforderungenfrdasPersonalmanagement,
    title = "Demographischer Wandel. Herausforderungen für das Personalmanagement",
    author = "Svenja {van Helmont}",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638053150",
    url = "https://www.hausarbeiten.de/document/92907"
}