@book{UBHD-65972245,
  author={Yong, Wen-An},
  title={Entropy and global solutions for hyperbolic systems of balance laws},
  year={2005},
  pages={66 S.},
  language={eng},
  school={Heidelberg, Univ., Habil.-Schr., 2005},
  keywords={Globale L{\"o}sung / Hyperbolisches System},
  library={UB [Signatur: 2005 U 558] ; MA [Signatur: Hab. Yong]},
}
@book{UBHD-66480697,
  author={Yong, Wen-An},
  title={Singular perturbations of first-order hyperbolic systems},
  year={1992},
  language={eng},
  school={Heidelberg, Univ., Diss., 1992},
  library={MA [Signatur: Diss. Yong]},
}