@article{JLT_1999__9_1_226853,
     author = {Walcher, Sebastian},
     title = {Multi-parameter symmetries of first order ordinary differential equations.},
     journal = {Journal of Lie Theory},
     pages = {249},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {1999},
     zbl = {0947.34020},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/JLT_1999__9_1_226853/}
}