%0 Journal Article %A Hans Lundmark %A Budor Shuaib %T Ghostpeakons and Characteristic Curves for the Camassa–Holm, Degasperis–Procesi and Novikov Equations %J Symmetry, integrability and geometry: methods and applications %D 2019 %V 15 %U http://geodesic.mathdoc.fr/item/SIGMA_2019_15_a16/ %G en %F SIGMA_2019_15_a16