@article{CC_2009_38_2_a2,
     author = {Gonz\'alez, Antonio and Mar{\'\i}n, Nicol\'as and Pons, Olga and Amparo Vila, M.},
     title = {Fuzzy certainty on fuzzy values},
     journal = {Control and Cybernetics},
     pages = {311--339},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {2009},
     zbl = {1301.94179},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2009_38_2_a2/}
}