Stephen E. Robertson. On Fuzzy sets: Reply to Cerny. JASIS, 30(6):357-358, 1979. [doi]
@article{Robertson79-2, title = {On Fuzzy sets: Reply to Cerny}, author = {Stephen E. Robertson}, year = {1979}, doi = {10.1002/asi.4630300611}, url = {http://dx.doi.org/10.1002/asi.4630300611}, researchr = {https://researchr.org/publication/Robertson79-2}, cites = {0}, citedby = {0}, journal = {JASIS}, volume = {30}, number = {6}, pages = {357-358}, }