TY - JOUR AU - M. A. Pankov TI - Irregular subsets of the Grassmannian manifolds and their maps JO - Žurnal matematičeskoj fiziki, analiza, geometrii PY - 2000 SP - 331 EP - 344 VL - 7 IS - 3 UR - http://geodesic.mathdoc.fr/item/JMAG_2000_7_3_a6/ LA - en ID - JMAG_2000_7_3_a6 ER -