@incollection{AST_1976__38-39__203_0,
     author = {Perrot, J. F.},
     title = {Calcul dans un mono{\"\i}de fini de transformations},
     booktitle = {Journ\'ees algorithmiques},
     series = {Ast\'erisque},
     pages = {203--211},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {38-39},
     year = {1976},
     mrnumber = {476894},
     zbl = {0354.20051},
     language = {fr},
     url = {http://archive.numdam.org/item/AST_1976__38-39__203_0/}
}