Alexander P. Sostak. Towards the theory of M-approcimate systems: Fundamentals and examples. Fuzzy Sets and Systems, 161(18):2440-2461, 2010. [doi]
@article{Sostak10, title = {Towards the theory of M-approcimate systems: Fundamentals and examples}, author = {Alexander P. Sostak}, year = {2010}, doi = {10.1016/j.fss.2010.05.010}, url = {http://dx.doi.org/10.1016/j.fss.2010.05.010}, researchr = {https://researchr.org/publication/Sostak10}, cites = {0}, citedby = {0}, journal = {Fuzzy Sets and Systems}, volume = {161}, number = {18}, pages = {2440-2461}, }