Matthias Kunik Shamsul Qamar Gerald Warnecke A BGK-Type Flux-Vector Splitting Scheme for the Ultrarelativistic Euler Equations. 196-223 2004 26 SIAM J. Scientific Computing 1 http://dx.doi.org/10.1137/S1064827503422208 db/journals/siamsc/siamsc26.html#KunikQW04