@book { OldEnglishKeywordsinContextAQuantitativeandQualitativeCorpusAnalysis,
    title = "Old English Keywords in Context. A Quantitative and Qualitative Corpus Analysis",
    author = "Christoph {Ruffing}",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/143742"
}