@article{2117,
author = {Vicente Gon\c calves, J.},
title = {Sur les syst\`emes de fonctions \`a jacobien nul},
journal = {Portugaliae mathematica},
volume = {3},
year = {1942},
pages = {157-170},
zbl = {0027.05101},
mrnumber = {0007018},
language = {fr},
url = {http://dml.mathdoc.fr/item/2117}
}
Vicente Gonçalves, J. Sur les systèmes de fonctions à jacobien nul. Portugaliae mathematica, Tome 3 (1942) pp. 157-170. http://gdmltest.u-ga.fr/item/2117/