Radial excitations of heavy-light mesons from QCD sum rules P. Gelhausen, A. Khodjamirian, A. A. Pivovarov and D. Rosenthal Eur. Phys. J. C, 74 8 (2014) 2979 Published online: 13 August 2014 DOI: 10.1140/epjc/s10052-014-2979-z