Guoting Chen, Jean Della Dora. Normal forms for differentiable maps near a fixed point. Numerical Algorithms, 22(2):213-230, 1999. [doi]
@article{ChenD99-1,
title = {Normal forms for differentiable maps near a fixed point},
author = {Guoting Chen and Jean Della Dora},
year = {1999},
doi = {10.1023/A:1019115025764},
url = {http://dx.doi.org/10.1023/A:1019115025764},
researchr = {https://researchr.org/publication/ChenD99-1},
cites = {0},
citedby = {0},
journal = {Numerical Algorithms},
volume = {22},
number = {2},
pages = {213-230},
}