%0 Journal Article %A Vajda, Igor %T Motivation, existence and equivariance of $D$-estimators %J Kybernetika %D 1984 %P 189-208 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1984__20_3_a1/ %G en %F KYB_1984__20_3_a1