On the parity of $k$-th powers modulo $p$. A generalization of a problem of Lehmer
Volume 147 / 2011
Acta Arithmetica 147 (2011), 173-203
MSC: 11K36, 11K38, 11L03, 11L07, 11N69.
DOI: 10.4064/aa147-2-6