Hylomorphic solitons for the generalized KdV equation
  In this paper we prove the existence of hylomorphic solitons in the generalized KdV equation. A soliton is called hylomorphic if it is a solitary wave whose stability is due to a particular relation between energy and another integral of motion which we call hylenic charge. 
Vieri Benci, Donato Fortunato
math-ph math.MP