%0 Journal Article %A H. Żołądek %T On relations between additive and multiplacative clustering operators %J Studia Mathematica %D 1988 %P 197-207 %V 88 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-88-3-197-207/ %R 10.4064/sm-88-3-197-207 %G en %F 10_4064_sm_88_3_197_207