Bunakiye R. Japheth and  Ogude U. Cyril,  A Domain Specific Modeling Language Semantic Model for Artefact Orientation.   journal   = {International Journal of Cognitive and Language Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 146(2). 75 - 79
    [viewed 27 January 2022]. Available from: https://publications.waset.org/pdf/10010058.