@article{GDZPPN002037076,
title = {Smoothness in disjoint groups of real functions under composition.},
journal = {Aequationes mathematicae},
volume = {36},
year = {1988},
pages = {1-16},
zbl = {0702.26010},
url = {http://dml.mathdoc.fr/item/GDZPPN002037076}
}
Blanton, George. Smoothness in disjoint groups of real functions under composition.. Aequationes mathematicae, Tome 36 (1988) pp. 1-16. http://gdmltest.u-ga.fr/item/GDZPPN002037076/