@Article{ delkaptop, author = { De Lellis, Camillo and Kappeler, Thomas and Topalov, Peter }, title = { Low--regularity solutions of the Camass--Holm equation }, journal = { Comm. Partial Differential Equations }, year = { 2007 }, volume = { 32 }, number = { 1-3 }, pages = { 87-126 }, URL = { http://cvgmt.sns.it/paper/1449/ }, note = { cvgmt preprint} }