@article{DM_1991_3_3_a2,
     author = {L. V. Nosov},
     title = {A~lower bound on the time complexity of an integer problem on the uniqueness of elements},
     journal = {Diskretnaya Matematika},
     pages = {31--34},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1991_3_3_a2/}
}