TY - JOUR AU - Yu Zhang AU - Yanyan Zhang TI - Riemann problem with delta initial data for the two-dimensional steady pressureless isentropic relativistic Euler equations JO - Mathematical modelling of natural phenomena PY - 2021 VL - 16 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp/2021011/ DO - 10.1051/mmnp/2021011 LA - en ID - 10_1051_mmnp_2021011 ER -