TY - JOUR AU - V. A. Iskovskikh TI - Double projection from a~line on Fano threefolds of the first kind JO - Sbornik. Mathematics PY - 1990 SP - 265 EP - 284 VL - 66 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1990_66_1_a14/ LA - en ID - SM_1990_66_1_a14 ER -