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@article{JRAM_1980__315_152230, author = {P. Erd\"os and R.R. Hall}, title = {On the {M\"obius} function.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {121--126}, publisher = {mathdoc}, volume = {315}, year = {1980}, zbl = {0419.10006}, url = {http://geodesic.mathdoc.fr/item/JRAM_1980__315_152230/} }
P. Erdös; R.R. Hall. On the Möbius function.. Journal für die reine und angewandte Mathematik, Tome 315 (1980), pp. 121-126. http://geodesic.mathdoc.fr/item/JRAM_1980__315_152230/