@article{bwmeta1.element.desklight-2b1f642d-a68d-428c-9902-ecb22511b075,
author = {James C. Lillo},
title = {The functional equation $f^2(x) = g(x)$
},
journal = {Annales Polonici Mathematici},
volume = {19},
year = {1967},
pages = {123-135},
zbl = {0162.46403},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-2b1f642d-a68d-428c-9902-ecb22511b075}
}
James C. Lillo. The functional equation $f^2(x) = g(x)$
. Annales Polonici Mathematici, Tome 19 (1967) pp. 123-135. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-2b1f642d-a68d-428c-9902-ecb22511b075/