Jennifer Leopold and  Alton Coalter and  Leong Lee,  A Generic, Functionally Comprehensive Approach to Maintaining an Ontology as a Relational Database.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2009, vol. 28(4). 957 - 967
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/13677.