@article{RM_1992_47_4_a1, author = {N. Kh. Ibragimov}, title = {Group analysis of ordinary differential equations and the invariance principle in mathematical physics (for the~150th anniversary of {Sophus~Lie)}}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {89--156}, publisher = {mathdoc}, volume = {47}, number = {4}, year = {1992}, language = {en}, url = {http://geodesic.mathdoc.fr/item/RM_1992_47_4_a1/} }