%0 Journal Article %A V. V. Nikulin %T Del Pezzo surfaces with log-terminal singularities %J Sbornik. Mathematics %D 1990 %P 231-248 %V 66 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1990_66_1_a12/ %G en %F SM_1990_66_1_a12