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@article{10_4064_cm_58_1_11_15, author = {Carl Pomerance}, title = {On the composition of the arithmetic functions \ensuremath{\sigma} and \ensuremath{\varphi}}, journal = {Colloquium Mathematicum}, pages = {11--15}, publisher = {mathdoc}, volume = {58}, number = {1}, year = {1989}, doi = {10.4064/cm-58-1-11-15}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-58-1-11-15/} }
TY - JOUR AU - Carl Pomerance TI - On the composition of the arithmetic functions σ and φ JO - Colloquium Mathematicum PY - 1989 SP - 11 EP - 15 VL - 58 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-58-1-11-15/ DO - 10.4064/cm-58-1-11-15 LA - en ID - 10_4064_cm_58_1_11_15 ER -
Carl Pomerance. On the composition of the arithmetic functions σ and φ. Colloquium Mathematicum, Tome 58 (1989) no. 1, pp. 11-15. doi : 10.4064/cm-58-1-11-15. http://geodesic.mathdoc.fr/articles/10.4064/cm-58-1-11-15/
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