%0 Journal Article %A M. S. Nikulin %A I. S. Yusas %T Distribution of a $\chi^2$ statistic with additional observations used to estimate the unknown parameter %J Zapiski Nauchnykh Seminarov POMI %D 1977 %P 98-102 %V 72 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1977_72_a6/ %G ru %F ZNSL_1977_72_a6