@article{BSMF_1997__125_3_337_0,
     author = {Dupont, Nicolas},
     title = {Un diviseur de z\'ero induisant un \'el\'ement d'homotopie central},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {337--344},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {125},
     number = {3},
     year = {1997},
     doi = {10.24033/bsmf.2310},
     mrnumber = {99a:55008},
     zbl = {0899.55011},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.2310/}
}