Vadim Ponomarenko. Faà di Bruno's formula and nonhyperbolic fixed points of one-dimensional maps. Int. J. Math. Mathematical Sciences, 2004(29):1543-1549, 2004. [doi]
@article{Ponomarenko04,
title = {Faà di Bruno's formula and nonhyperbolic fixed points of one-dimensional maps},
author = {Vadim Ponomarenko},
year = {2004},
doi = {10.1155/S0161171204306253},
url = {http://dx.doi.org/10.1155/S0161171204306253},
researchr = {https://researchr.org/publication/Ponomarenko04},
cites = {0},
citedby = {0},
journal = {Int. J. Math. Mathematical Sciences},
volume = {2004},
number = {29},
pages = {1543-1549},
}