TY - GEN AU - Romatschke,Paul AU - Romatschke,Ulrike TI - Viscosity information from relativistic nuclear collisions: how perfect is the fluid observed at RHIC? SN - 0031-9007 PY - 2008///0129 N1 - Publication Type: Journal Article UR - https://doi.org/10.1103/PhysRevLett.99.172301 ER -