@article{SEDP_1972-1973____A6_0,
     author = {Frank, L.},
     title = {Fonctions de mailles et th\'eorie elliptique des op\'erateurs aux diff\'erences finies},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:5},
     pages = {1--13},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1972-1973},
     mrnumber = {483523},
     zbl = {0262.47025},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1972-1973____A6_0/}
}