I. A. Popovyan, “Optimal logarithmic functions for lifting of a solution of an exponential congruence”, Diskr. Mat., 19:2 (2007), 51–62; Discrete Math. Appl., 17:3 (2007), 237–248
2006
2.
I. A. Popovyan, “Lifting of Solutions of an Exponential Congruence”, Mat. Zametki, 80:1 (2006), 76–86; Math. Notes, 80:1 (2006), 72–82