A. Constantin et J. Escher, ON THE CAUCHY-PROBLEM FOR A FAMILY OF QUASI-LINEAR HYPERBOLIC-EQUATIONS, Communications in partial differential equations, 23(7-8), 1998, pp. 1449-1458
We prove local well-posedness and give some global existence and blow-
up criteria for solutions of a family of quasilinear hyperbolic equati
ons arising in, shallow water theory.