%0 Journal Article %A S. Siudut %T Some remarks on theorems of Romanovski and Faddeev type %J Commentationes Mathematicae %D 1990 %P 287-296 %V 29 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/cm.v29i2.6280/ %R 10.14708/cm.v29i2.6280 %G pl %F 10_14708_cm_v29i2_6280