1. http://www.omg.org/spec/SBVR/1.5/PDF
2. https://www.w3.org/RDF/Validator/rdfval
3. van der Aa, H., Leopold, H., Reijers, H.A.: Checking process compliance against natural language specifications using behavioral spaces. Inf. Syst. 78, 83–95 (2018)
4. Afreen, H., & Bajwa, I. S. (2011). Generating UML class models from SBVR software requirements specifications. In 23rd Benelux Conference on Artificial Intelligence (BNAIC 2011) (pp. 23–32).
5. Al-Harbi, O., Jusoh, S., Norwawi, N.: Handling ambiguity problems of natural language interface for question answering. Int J Comput Sci Issues (IJCSI) 9(3), 17 (2012)