@article{SEDP_1971-1972____A16_0,
     author = {El Kolli, A.},
     title = {$n^{i\`eme}$ \'epaisseur dans les espaces de {Sobolev} avec poids},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:17},
     pages = {1--17},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1971-1972},
     mrnumber = {394171},
     zbl = {0242.46028},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1971-1972____A16_0/}
}