%0 Journal Article %A M. Nagata %T On rational surfaces. I.~Irreducible curves of arithmetic genus~0 or~1 %J Matematika %D 1964 %P 55-72 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAT_1964_8_1_a3/ %G ru %F MAT_1964_8_1_a3