Moree, Pieter Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.1017/S0305004114000450 (Publisher version)
Moree_Character sums_oa_2014.pdf (Any fulltext), 271KB
Lenstra, H. W., Moree, P., & Stevenhagen, P. (2014). Character sums for primitive root densities. Mathematical Proceedings of the Cambridge Philosophical Society, 157(3), 489-511. doi:10.1017/S0305004114000450.