@article{GDZPPN002030632,
title = {The fundamental theorem for the projective line over commutative rings.},
journal = {Aequationes mathematicae},
volume = {15},
year = {1977},
pages = {275-282},
zbl = {0371.13018},
url = {http://dml.mathdoc.fr/item/GDZPPN002030632}
}
Limaye, B.V.; Limaye, N.B. The fundamental theorem for the projective line over commutative rings.. Aequationes mathematicae, Tome 15 (1977) pp. 275-282. http://gdmltest.u-ga.fr/item/GDZPPN002030632/