@article{1077288013,
author = {Gong, Xianghong},
title = {Normal forms of real surfaces under unimodular transformations
near elliptic complex tangents},
journal = {Duke Math. J.},
volume = {76},
number = {1},
year = {1994},
pages = { 145-157},
language = {en},
url = {http://dml.mathdoc.fr/item/1077288013}
}
Gong, Xianghong. Normal forms of real surfaces under unimodular transformations
near elliptic complex tangents. Duke Math. J., Tome 76 (1994) no. 1, pp. 145-157. http://gdmltest.u-ga.fr/item/1077288013/