@article{GDZPPN002396807, title = {On the solution of the equation f' (...) = ...f (g (...)).}, journal = {Mathematische Zeitschrift}, volume = {87}, year = {1965}, pages = {391-392}, zbl = {0128.30702}, url = {http://dml.mathdoc.fr/item/GDZPPN002396807} }
Siu, Y.T. On the solution of the equation f' (...) = ...f (g (...)).. Mathematische Zeitschrift, Tome 87 (1965) pp. 391-392. http://gdmltest.u-ga.fr/item/GDZPPN002396807/