%0 Journal Article %A M. S. Ermakov %T On a~sufficient statistics for families of distributions with variable support of density.~I %J Zapiski Nauchnykh Seminarov POMI %D 1980 %P 62-82 %V 97 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1980_97_a7/ %G ru %F ZNSL_1980_97_a7