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50 
- Sergei V. Konyagin, Igor E. Shparlinski, “ON THE CONSECUTIVE POWERS OF A PRIMITIVE ROOT: GAPS AND EXPONENTIAL SUMS”, Mathematika, 58, no. 1, 2012,
11 - Igor E. Shparlinski, “Ratios of Small Integers in Multiplicative Subgroups of Residue Rings”, Experimental Mathematics, 25, no. 3, 2016,
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