@article{05174684, title = {Invariant tensors and partial differential equations.}, journal = {Sibirskij Matematicheskij Zhurnal}, volume = {47}, year = {2006}, pages = {316-328}, zbl = {1115.35014}, language = {en}, url = {http://dml.mathdoc.fr/item/05174684} }
Kaptsov, O.V. Invariant tensors and partial differential equations.. Sibirskij Matematicheskij Zhurnal, Tome 47 (2006) pp. 316-328. http://gdmltest.u-ga.fr/item/05174684/