RR Lyrae star distance scale and kinematics from inner bulge to 50 kpc Andrei Dambis, Leonid Berdnikov, Eva Grebel, Alexey Kniazev, Igor Katkov and Tesfaye Dagne EPJ Web Conf., 152 (2017) 02007 Published online: 08 September 2017 DOI: 10.1051/epjconf/201715202007