@article{TAM_1981_7_1_a12, author = {Dragi Radojevi\'c}, title = {Eigen values and principal directions of the energy momentum tensor of the ferrofluid}, journal = {Theoretical and applied mechanics}, pages = {113 }, publisher = {mathdoc}, volume = {7}, number = {1}, year = {1981}, language = {en}, url = {http://geodesic.mathdoc.fr/item/TAM_1981_7_1_a12/} }