Acta Mathematica Academiae Scientiarum Hungaricae · 1984 · 56 citations · 4 references
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Counting polynomial functions (mod pn)
Gordon Keller, F. R. Olson · Duke Mathematical Journal · 1968 · 47 citations
Functions and polynomials ($mod p^n$)
L. Carlitz · Acta Arithmetica · 1964 · 44 citations · Full text