@book { CirculationEconomics,
    title = "Circulation Economics",
    subtitle = "Theory and Practice",
    author = "Stig {Ingebrigtsen} and Ove {Jakobsen}",
    year = "2007",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    url = "https://www.peterlang.com/document/1102470"
}