@article{10_21136_CMJ_2019_0133_18,
     author = {Djamel, Bellaouar and Abdelmadjid, Boudaoud and \"Ozer, \"Ozen},
     title = {On a sequence formed by iterating a divisor operator},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1177--1196},
     publisher = {mathdoc},
     volume = {69},
     number = {4},
     year = {2019},
     doi = {10.21136/CMJ.2019.0133-18},
     mrnumber = {4039629},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2019.0133-18/}
}