@incollection{AST_1981__87-88__43_0,
     author = {Brylinski, J. L.},
     title = {Differential operators on the flag varieties},
     booktitle = {Tableaux de Young et foncteurs de Schur en alg\`ebre et g\'eom\'etrie - TORUN, Pologne, 1980},
     series = {Ast\'erisque},
     pages = {43--60},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {87-88},
     year = {1981},
     mrnumber = {646814},
     zbl = {0537.14010},
     language = {en},
     url = {http://archive.numdam.org/item/AST_1981__87-88__43_0/}
}