@article{ASNSP_2012_5_11_2_259_0,
     author = {Williams, Marshall},
     title = {Metric currents, differentiable structures, and {Carnot} groups},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {259--302},
     publisher = {Scuola Normale Superiore, Pisa},
     volume = {Ser. 5, 11},
     number = {2},
     year = {2012},
     mrnumber = {3011992},
     zbl = {1258.30029},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2012_5_11_2_259_0/}
}