Félix Díaz-Hermida Alberto Bugarín Senén Barro Definition and classification of semi-fuzzy quantifiers for the evaluation of fuzzy quantified sentences. 49-88 2003 34 Int. J. Approx. Reasoning 1 http://dx.doi.org/10.1016/S0888-613X(03)00053-7 db/journals/ijar/ijar34.html#Diaz-HermidaBB03