@article{JEDP_1982____A16_0,
     author = {Bachelot, Alain},
     title = {Op\'erateurs de convolution d\'efinis \`a partir d'une forme quadratique},
     journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {16},
     pages = {1--8},
     publisher = {Ecole polytechnique},
     year = {1982},
     zbl = {0536.47037},
     language = {fr},
     url = {http://archive.numdam.org/item/JEDP_1982____A16_0/}
}