@incollection{AST_1983__101-102__193_0,
     author = {Laumon, G\'erard},
     title = {Caract\'eristique {d'Euler-Poincar\'e} des faisceaux constructibles sur une surface},
     booktitle = {Analyse et topologie sur les espaces singuliers (II-III) - 6 - 10 juillet 1981},
     series = {Ast\'erisque},
     pages = {193--207},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {101-102},
     year = {1983},
     zbl = {0533.14007},
     mrnumber = {737931},
     language = {fr},
     url = {http://www.numdam.org/item/AST_1983__101-102__193_0/}
}