@book { ZentraleProblemebeiderErforschungderlterenRunen,
    title = "Zentrale Probleme bei der Erforschung der älteren Runen",
    author = "John Ole {Askedal} and Harald {Bjorvand} and James E. {Knirk} and Otto Erlend {Nordgreen}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135520"
}