@article{urn:eudml:doc:39318, title = {The unitary analogue of Pillai's arithmetical function.}, journal = {Collectanea Mathematica}, volume = {40}, year = {1989}, pages = {19-30}, zbl = {0712.11010}, mrnumber = {MR1078089}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39318} }
Tóth, László. The unitary analogue of Pillai's arithmetical function.. Collectanea Mathematica, Tome 40 (1989) pp. 19-30. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39318/