@article{CRMATH_2002__335_2_167_0,
     author = {Gouillon, Nicolas},
     title = {Un lemme de z\'eros},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {167--170},
     publisher = {Elsevier},
     volume = {335},
     number = {2},
     year = {2002},
     doi = {10.1016/S1631-073X(02)02422-6},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(02)02422-6/}
}