WASET
    Mohammed Erritali,  Information Retrieval: A Comparative Study of Textual Indexing Using an Oriented Object Database (db4o) and the Inverted File.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 95(11). 2038 - 2043
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10000186.