TY - JOUR AU - Sochor, AntonĂ­n TI - Constructibility and shiftings of view JO - Commentationes Mathematicae Universitatis Carolinae PY - 1985 SP - 477 EP - 498 VL - 26 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1985__26_3_a4/ LA - en ID - CMUC_1985__26_3_a4 ER -