TY - JOUR AU - S. Siudut TI - Some remarks on theorems of Romanovski and Faddeev type JO - Commentationes Mathematicae PY - 1990 SP - 287 EP - 296 VL - 29 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v29i2.6280/ DO - 10.14708/cm.v29i2.6280 LA - pl ID - 10_14708_cm_v29i2_6280 ER -