@article{CRMATH_2002__334_10_899_0,
     author = {Costa, Antonio F. and Porto, Ana M.},
     title = {Sur des invariants galoisiens des rev\^etements ramifi\'es},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {899--902},
     publisher = {Elsevier},
     volume = {334},
     number = {10},
     year = {2002},
     doi = {10.1016/S1631-073X(02)02281-1},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(02)02281-1/}
}