@incollection{JEDP_1993____A12_0, author = {Derezinski, Jan}, title = {Some remarks on {Weyl} pseudodifferential operators}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {12}, pages = {1--14}, publisher = {Ecole polytechnique}, year = {1993}, mrnumber = {94j:35205}, zbl = {0802.35171}, language = {en}, url = {http://archive.numdam.org/item/JEDP_1993____A12_0/} }