@article{JEDP_1993____A12_0,
     author = {Derezinski, Jan},
     title = {Some remarks on {Weyl} pseudodifferential operators},
     journal = {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://www.numdam.org/item/JEDP_1993____A12_0/}
}