@article{MAT_1964_8_1_a3, author = {M. Nagata}, title = {On rational surfaces. {I.~Irreducible} curves of arithmetic genus~0 or~1}, journal = {Matematika}, pages = {55--72}, publisher = {mathdoc}, volume = {8}, number = {1}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1964_8_1_a3/} }