CONCORD: comparison of cosmic radiation detectors in the radiation field at aviation altitudesMatthias M. Meier, François Trompier, Iva Ambrozova, Jan Kubancak, Daniel Matthiä, Ondrej Ploc, Nicole Santen and Michael WirtzJ. Space Weather Space Clim., 6 (2016) A24DOI: https://doi.org/10.1051/swsc/2016017