The mass composition of cosmic rays measured with LOFAR
Jörg R. Hörandel, A. Bonardi, S. Buitink, A. Corstanje, H. Falcke, P. Mitra, K. Mulrey, A. Nelles, J.P. Rachen, L. Rossetto, P. Schellart, O. Scholten, S. ter Veen, S. Thoudam, T.N.G. Trinh and T. Winchen
EPJ Web Conf., 136 (2017) 02001
DOI: https://doi.org/10.1051/epjconf/201713602001