Two solar proton fluence models based on ground level enhancement observationsOsku Raukunen, Rami Vainio, Allan J. Tylka, William F. Dietrich, Piers Jiggens, Daniel Heynderickx, Mark Dierckxsens, Norma Crosby, Urs Ganse and Robert SiipolaJ. Space Weather Space Clim., 8 (2018) A04DOI: https://doi.org/10.1051/swsc/2017031
