@article{1250776405,
author = {Nagata, Masayoshi},
title = {On rational surfaces I. Irreducible curves of arithmetic genus $0$ or $1$},
journal = {Mem. College Sci. Univ. Kyoto Ser. A Math.},
volume = {33},
number = {2},
year = {1960},
pages = { 351-370},
language = {en},
url = {http://dml.mathdoc.fr/item/1250776405}
}
Nagata, Masayoshi. On rational surfaces I. Irreducible curves of arithmetic genus $0$ or $1$. Mem. College Sci. Univ. Kyoto Ser. A Math., Tome 33 (1960) no. 2, pp. 351-370. http://gdmltest.u-ga.fr/item/1250776405/