@article{SEDP_2005-2006____A12_0,
     author = {Ferrari, Fausto and Franchi, Bruno and Pajot, Herv\'e},
     title = {Courbure et sous-ensembles de courbes rectifiables dans le groupe de {Heisenberg}},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:12},
     pages = {1--10},
     publisher = {Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
     year = {2005-2006},
     mrnumber = {2276077},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_2005-2006____A12_0/}
}