@article{CC_2009_38_2_a6,
     author = {Angryk, Rafal A.},
     title = {Attribute-oriented defuzzification of fuzzy database tuples with categorical entries},
     journal = {Control and Cybernetics},
     pages = {419--453},
     year = {2009},
     volume = {38},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2009_38_2_a6/}
}