@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/