TY - JOUR AU - V. V. Tkachuk TI - Spaces that are projective with respect to classes of mappings JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 1987 SP - 138 EP - 155 VL - 50 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MMO_1987_50_a4/ LA - ru ID - MMO_1987_50_a4 ER -