H. Maier. "On the third iterates of the φ- and σ-functions." Colloquium Mathematicae 49.1 (1984): 123-130. <http://eudml.org/doc/263899>.
@article{H1984, author = {H. Maier}, journal = {Colloquium Mathematicae}, keywords = {sum of divisors function; lower bounds; Euler phi-function; sieve method}, language = {eng}, number = {1}, pages = {123-130}, title = {On the third iterates of the φ- and σ-functions}, url = {http://eudml.org/doc/263899}, volume = {49}, year = {1984}, }
TY - JOUR AU - H. Maier TI - On the third iterates of the φ- and σ-functions JO - Colloquium Mathematicae PY - 1984 VL - 49 IS - 1 SP - 123 EP - 130 LA - eng KW - sum of divisors function; lower bounds; Euler phi-function; sieve method UR - http://eudml.org/doc/263899 ER -
