@article{BSMF_1992__120_4_467_0,
     author = {Fathi, Albert},
     title = {D\'emonstration d'un th\'eor\`eme de {Penner} sur la composition des twists de {Dehn}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {467--484},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {120},
     number = {4},
     year = {1992},
     doi = {10.24033/bsmf.2194},
     mrnumber = {93j:57005},
     zbl = {0779.57005},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.2194/}
}