Global solutions to a class of two-dimensional Riemann problems for the Euler equations with general equation of state Geng Lai Indiana University Mathematics Journal 2019 text pdf 10.1512/iumj.2019.68.7782 10.1512/iumj.2019.68.7782 en Indiana Univ. Math. J. 68 (2019) 1409 - 1464 state-of-the-art mathematics http://iumj.org/access/