@article{CM_1986__58_3_279_0,
     author = {Bratteli, Ola and Elliott, George A. and Robinson, Derek W.},
     title = {The characterization of differential operators by locality : classical flows},
     journal = {Compositio Mathematica},
     pages = {279--319},
     publisher = {Martinus Nijhoff Publishers},
     volume = {58},
     number = {3},
     year = {1986},
     mrnumber = {846908},
     zbl = {0606.47048},
     language = {en},
     url = {http://www.numdam.org/item/CM_1986__58_3_279_0/}
}