%0 Journal Article %A K. Lau %A K. Ziętak %T A note on linear approximations of matrices %J Applicationes Mathematicae %D 1991 %P 257-263 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-21-2-257-263/ %R 10.4064/am-21-2-257-263 %G en %F 10_4064_am_21_2_257_263