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@article{MZM_1985_38_1_a0, author = {D. A. Mit'kin}, title = {Polynomials with minimal set of values and the equation $f(x)=f(y)$ in a finite prime field}, journal = {Matemati\v{c}eskie zametki}, pages = {3--14}, publisher = {mathdoc}, volume = {38}, number = {1}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1985_38_1_a0/} }
D. A. Mit'kin. Polynomials with minimal set of values and the equation $f(x)=f(y)$ in a finite prime field. Matematičeskie zametki, Tome 38 (1985) no. 1, pp. 3-14. http://geodesic.mathdoc.fr/item/MZM_1985_38_1_a0/