Carl H. Smith, Rolf Wiehagen, Thomas Zeugmann. Classifying Predicates and Languages. Int. J. Found. Comput. Sci., 8(1):15, 1997.
@article{SmithWZ97, title = {Classifying Predicates and Languages}, author = {Carl H. Smith and Rolf Wiehagen and Thomas Zeugmann}, year = {1997}, researchr = {https://researchr.org/publication/SmithWZ97}, cites = {0}, citedby = {0}, journal = {Int. J. Found. Comput. Sci.}, volume = {8}, number = {1}, pages = {15}, }