@article{ND_2010_6_3_a2,
     author = {V. I. Arnol'd},
     title = {Are quadratic residues random?},
     journal = {Russian journal of nonlinear dynamics},
     pages = {513--520},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2010_6_3_a2/}
}