@article{GDZPPN002026295, title = {Very Slowly Varying Functions. (Short Communications).}, journal = {Aequationes mathematicae}, volume = {8}, year = {1972}, pages = {191-192}, url = {http://dml.mathdoc.fr/item/GDZPPN002026295} }
Erdös, P.; Ash, J. Marshall; Rubel, L.A. Very Slowly Varying Functions. (Short Communications).. Aequationes mathematicae, Tome 8 (1972) pp. 191-192. http://gdmltest.u-ga.fr/item/GDZPPN002026295/