@article{GDZPPN001250744,
title = {On the fixpoints of monogenic functions in free monoids.},
journal = {Semigroup forum},
volume = {11},
year = {1975},
pages = {315-328},
zbl = {0299.20044},
url = {http://dml.mathdoc.fr/item/GDZPPN001250744}
}
Leeuwen, J. van. On the fixpoints of monogenic functions in free monoids.. Semigroup forum, Tome 11 (1975) pp. 315-328. http://gdmltest.u-ga.fr/item/GDZPPN001250744/