Yiu-Kai Ng, David W. Embley. The Retrieval Power of NFQL. In ACM Conference on Computer Science. pages 62-69, 1989.
@inproceedings{NgE89, title = {The Retrieval Power of NFQL}, author = {Yiu-Kai Ng and David W. Embley}, year = {1989}, researchr = {https://researchr.org/publication/NgE89}, cites = {0}, citedby = {0}, pages = {62-69}, booktitle = {ACM Conference on Computer Science}, }