@article{GDZPPN002026465,
title = {On Functions Defined by Iterations of Each Other.},
journal = {Aequationes mathematicae},
volume = {8},
year = {1972},
pages = {238-241},
zbl = {0257.39002},
url = {http://dml.mathdoc.fr/item/GDZPPN002026465}
}
Becker, J.D.; Ordman, E.T. On Functions Defined by Iterations of Each Other.. Aequationes mathematicae, Tome 8 (1972) pp. 238-241. http://gdmltest.u-ga.fr/item/GDZPPN002026465/