Gravitational lensing for a boosted Kerr black hole in the presence of plasma Carlos A. Benavides-Gallego, A. A. Abdujabbarov and Cosimo Bambi Eur. Phys. J. C, 78 9 (2018) 694 Published online: 30 August 2018 DOI: 10.1140/epjc/s10052-018-6170-9