%0 Journal Article %A Hong, Dug Hun %T On types of fuzzy numbers under addition %J Kybernetika %D 2004 %P [469] %V 40 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2004__40_4_a4/ %G en %F KYB_2004__40_4_a4