TY - JOUR AU - Dragi Radojević TI - Eigen values and principal directions of the energy momentum tensor of a perfect charged fluid JO - Theoretical and applied mechanics PY - 1979 SP - 151 VL - 5 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAM_1979_5_1_a14/ LA - en ID - TAM_1979_5_1_a14 ER -