Davide Ciucci, Tommaso Flaminio. Generalized rough approximations in PI 1/2. Int. J. Approx. Reasoning, 48(2):544-558, 2008. [doi]
@article{CiucciF08, title = {Generalized rough approximations in PI 1/2}, author = {Davide Ciucci and Tommaso Flaminio}, year = {2008}, doi = {10.1016/j.ijar.2007.10.006}, url = {http://dx.doi.org/10.1016/j.ijar.2007.10.006}, researchr = {https://researchr.org/publication/CiucciF08}, cites = {0}, citedby = {0}, journal = {Int. J. Approx. Reasoning}, volume = {48}, number = {2}, pages = {544-558}, }