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Todd Cochrane, Misty Ostergaard, Craig Spencer, “Homogeneous additive congruences”, Rocky Mountain J. Math., 52:4 (2022)
Mei-Chu Chang, Bryce Kerr, Igor E. Shparlinski, “On the exponential large sieve inequality for sparse sequences modulo primes”, Journal of Mathematical Analysis and Applications, 459:1 (2018), 53
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Todd Cochrane, Dilum De Silva, Christopher Pinner, “(p - 1)th Roots of unity mod pn, generalized Heilbronn sums, Lind-Lehmer constants, and Fermat quotients”, Michigan Math. J., 66:1 (2017)