@article{02168705, title = {Fa\`a di Bruno's formula and nonhyperbolic fixed points of one-dimensional maps.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2004}, year = {2004}, pages = {1543-1549}, doi = {10.1155/S0161171204306253}, zbl = {1068.37024}, language = {en}, url = {http://dml.mathdoc.fr/item/02168705} }
Ponomarenko, Vadim. Faà di Bruno's formula and nonhyperbolic fixed points of one-dimensional maps.. International Journal of Mathematics and Mathematical Sciences, Tome 2004 (2004) pp. 1543-1549. doi : 10.1155/S0161171204306253. http://gdmltest.u-ga.fr/item/02168705/