@article{JEMS_2006_8_1_a0,
     author = {Peter W. Michor and David B. Mumford},
     title = {Riemannian geometries on spaces of plane curves},
     journal = {Journal of the European Mathematical Society},
     pages = {1--48},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {2006},
     doi = {10.4171/jems/37},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/37/}
}