@Article{ ste07, author = { Stepanov, Eugene }, title = { Rectifiability of metric flat chains and fractional masses }, journal = { J. Math. Sciences (N.Y.) }, year = { 2010 }, volume = { 167 }, number = { 3 }, pages = { 406-417 }, URL = { http://cvgmt.sns.it/paper/1435/ }, note = { cvgmt preprint} }