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@article{KJM_2005_27_1_a4, author = {Milorad R. Stevanovi\'c}, title = {Sequences related to the sum of divisors}, journal = {Kragujevac Journal of Mathematics}, pages = {47 - 54}, publisher = {mathdoc}, volume = {27}, number = {1}, year = {2005}, zbl = {1082.11059}, url = {http://geodesic.mathdoc.fr/item/KJM_2005_27_1_a4/} }
Milorad R. Stevanović. Sequences related to the sum of divisors. Kragujevac Journal of Mathematics, Tome 27 (2005) no. 1. http://geodesic.mathdoc.fr/item/KJM_2005_27_1_a4/