@book { HealthCareExpendituresInnovationandDemographicChange,
    title = "Health Care Expenditures, Innovation, and Demographic Change",
    author = "Yasemin {Ilgin}",
    year = "2008",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1105465"
}