@article{SEDP_1971-1972____A25_0,
     author = {H\"ormander, L.},
     title = {On the singularities of solutions of partial differential equations with constant coefficients},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:25},
     pages = {1--6},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1971-1972},
     mrnumber = {477412},
     zbl = {0247.35005},
     language = {en},
     url = {http://archive.numdam.org/item/SEDP_1971-1972____A25_0/}
}