@article{10_4064_aa_46_3_215_225,
     author = {Claudia Spiro},
     title = {An iteration problem involving the divisor function},
     journal = {Acta Arithmetica},
     pages = {215--225},
     publisher = {mathdoc},
     volume = {46},
     number = {3},
     year = {1985},
     doi = {10.4064/aa-46-3-215-225},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-46-3-215-225/}
}