Meltem Serhatli and  Ferda N. Alpaslan,  An Ontology Based Question Answering System on Software Test Document Domain.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2009, vol. 30(6). 1630 - 1634
    [viewed 28 November 2021]. Available from: https://publications.waset.org/pdf/9576.