%0 Journal Article %A Mieczysław Kuczyński %T Analysis of covariance in systems with split-plot design %J Mathematica Applicanda %D 1981 %P 69-82 %V 9 %N 17 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v9i17.1517/ %R 10.14708/ma.v9i17.1517 %G pl %F 10_14708_ma_v9i17_1517