Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{JRAM_1993__445_153580, author = {U. Zannier}, title = {Ritt's {Second} {Theorem} in arbitrary characteristic.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {175--204}, publisher = {mathdoc}, volume = {445}, year = {1993}, zbl = {0786.12001}, url = {http://geodesic.mathdoc.fr/item/JRAM_1993__445_153580/} }
U. Zannier. Ritt's Second Theorem in arbitrary characteristic.. Journal für die reine und angewandte Mathematik, Tome 445 (1993), pp. 175-204. http://geodesic.mathdoc.fr/item/JRAM_1993__445_153580/