@book{Poetzsch2016, author = {Eleonore Poetzsch}, title = {Information Retrieval}, edition = {4., v{\"o}llig neu bearb. und erw.}, series = {Einf{\"u}hrung in Grundlagen und Methoden (Materialien zur Information und Dokumentation ; 5)}, isbn = {3-935035-75-6}, year = {2016}, }