Subrata Kumar Das. Integrity constraints in deductive databases. PhD thesis, Heriot-Watt University, Edinburgh, UK, 1990. [doi]
@phdthesis{ethos-9503, title = {Integrity constraints in deductive databases}, author = {Subrata Kumar Das}, year = {1990}, url = {http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280728}, note = {British Library, EThOS}, researchr = {https://researchr.org/publication/ethos-9503}, cites = {0}, citedby = {0}, school = {Heriot-Watt University, Edinburgh, UK}, }