@Misc{ men, author = { Mennucci, Andrea C. G. }, title = { Metrics of curves in shape optimization and analysis }, journal = { Springer Lecture Notes in Mathematics }, year = { 2013 }, doi = { 10.1007/978-3-319-01712-9_4 }, volume = { Level Set and PDE Based Reconstr }, pages = { 205-319 }, URL = { http://cvgmt.sns.it/paper/1566/ }, note = { cvgmt preprint} }