@article{10_1017_S0017089500002093, author = {Hills, R. N.}, title = {A note on uniqueness for anisotropic fluids}, journal = {Glasgow mathematical journal}, pages = {43--47}, year = {1974}, volume = {15}, number = {1}, doi = {10.1017/S0017089500002093}, url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002093/} }