TY - JOUR AU - V. V. Nikulin TI - Del~Pezzo surfaces with log-terminal singularities.~III JO - Izvestiya. Mathematics PY - 1990 SP - 657 EP - 675 VL - 35 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1990_35_3_a6/ LA - en ID - IM2_1990_35_3_a6 ER -