@article{10_1007_s10587_014_0122_9,
     author = {Ju, Tengxia and Wu, Meiyun},
     title = {On iteration digraph and zero-divisor graph of the ring $\mathbb {Z}_n$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {611--628},
     publisher = {mathdoc},
     volume = {64},
     number = {3},
     year = {2014},
     doi = {10.1007/s10587-014-0122-9},
     mrnumber = {3298550},
     zbl = {06391515},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0122-9/}
}