@article{GDZPPN002330407,
title = {Birational Morphisms to lP2: An Ideal-Theoretic Perspective.},
journal = {Mathematische Annalen},
volume = {277},
year = {1987},
pages = {435-448},
zbl = {0657.14003},
url = {http://dml.mathdoc.fr/item/GDZPPN002330407}
}
Davis, Edward D.; Geramita, Anthony V. Birational Morphisms to lP2: An Ideal-Theoretic Perspective.. Mathematische Annalen, Tome 277 (1987) pp. 435-448. http://gdmltest.u-ga.fr/item/GDZPPN002330407/