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@article{MV_1970_22_1_a6, author = {W. E. Mientka and R. L. Vogt}, title = {Computational results relating to problems concerning $\sigma (n)$}, journal = {Matemati\v{c}ki vesnik}, pages = {35 }, publisher = {mathdoc}, volume = {22}, number = {1}, year = {1970}, url = {http://geodesic.mathdoc.fr/item/MV_1970_22_1_a6/} }
W. E. Mientka; R. L. Vogt. Computational results relating to problems concerning $\sigma (n)$. Matematički vesnik, Tome 22 (1970) no. 1, p. 35 . http://geodesic.mathdoc.fr/item/MV_1970_22_1_a6/