Towards a cosmic-ray mass-composition study at Tunka Radio Extension D. Kostunin, P. A. Bezyazeekov, N. M. Budnev, O. Fedorov, O. A. Gress, A. Haungs, R. Hiller, T Huege, Y Kazarina, M. Kleifges et al. (16 more) EPJ Web Conf., 135 (2017) 01005 Published online: 15 March 2017 DOI: 10.1051/epjconf/201713501005