@article{MAN_1971__192_162171,
     author = {J.R. DORROH},
     title = {Local {Groups} of {Differentiable} {Transformations.}},
     journal = {Mathematische Annalen},
     pages = {243--249},
     publisher = {mathdoc},
     volume = {192},
     year = {1971},
     zbl = {0205.28301},
     url = {http://geodesic.mathdoc.fr/item/MAN_1971__192_162171/}
}