  Generalizations of the Korteweg-de Vries equation are considered, and some
explicit solutions are presented. There are situations where solutions engender
the interesting property of being chiral, that is, of having velocity
determined in terms of the parameters that define the generalized equation,
with a definite sign.

Exactly Solvable and Integrable Systems;Soft Condensed Matter;High Energy Physics - Theory;Exactly Solvable and Integrable Systems