@article{GDZPPN002092565,
title = {Local Normal Forms of Functions.},
journal = {Inventiones mathematicae},
volume = {34},
year = {1976},
pages = {87-110},
zbl = {0336.57022},
url = {http://dml.mathdoc.fr/item/GDZPPN002092565}
}
Arnold, V.I. Local Normal Forms of Functions.. Inventiones mathematicae, Tome 34 (1976) pp. 87-110. http://gdmltest.u-ga.fr/item/GDZPPN002092565/