@article{GDZPPN002024497, title = {On Two Functional Equations Connected with the Equation ... .}, journal = {Aequationes mathematicae}, volume = {5}, year = {1970}, pages = {3-9}, zbl = {0203.46203}, url = {http://dml.mathdoc.fr/item/GDZPPN002024497} }
Swiatak, Halina. On Two Functional Equations Connected with the Equation ... .. Aequationes mathematicae, Tome 5 (1970) pp. 3-9. http://gdmltest.u-ga.fr/item/GDZPPN002024497/