@incollection{AST_1973__7-8__263_0,
     author = {Lazzeri, Fulvio},
     title = {Morse theory on singular spaces},
     booktitle = {Singularit\'es \`a Carg\`ese},
     series = {Ast\'erisque},
     pages = {263--268},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {7-8},
     year = {1973},
     mrnumber = {382711},
     zbl = {0307.57014},
     language = {en},
     url = {http://www.numdam.org/item/AST_1973__7-8__263_0/}
}