@book { PricinghealthservicesTransactioncostapproach,
    title = "Pricing health services: Transaction cost approach",
    author = "Monika {Raulinajtys-Grzybek}",
    year = "2015",
    publisher = "Anchor Academic Publishing",
    address = "Hamburg, Germany",
    url = "https://m.anchor-publishing.com/document/293710"
}