@article {2006,
title = {Conservative Solutions to a Nonlinear Variational Wave Equation},
journal = {Comm. Math. Phys. 266 (2006) 471-497},
number = {arXiv.org;math/0502058v1},
year = {2006},
abstract = {We establish the existence of a conservative weak solution to the Cauchy problem for the nonlinear variational wave equation $u_{tt} - c(u)(c(u)u_x)_x=0$, for initial data of finite energy. Here $c(\\\\cdot)$ is any smooth function with uniformly positive bounded values.},
doi = {10.1007/s00220-006-0047-8},
url = {http://hdl.handle.net/1963/2184},
author = {Alberto Bressan and Zheng Yuxi}
}