%0 Journal Article %A Volaufová, Júlia %T On variance of the two-stage estimator in variance-covariance components model %J Applications of Mathematics %D 1993 %P 1-9 %V 38 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1993.104529/ %R 10.21136/AM.1993.104529 %G en %F 10_21136_AM_1993_104529