Dry unit weight of compacted soils prediction using GMDH-type neural networkMahmoud Hassanlourad, Alireza Ardakani, Afshin Kordnaeij and Hossein Mola-AbasiEur. Phys. J. Plus, 132 8 (2017) 357DOI: https://doi.org/10.1140/epjp/i2017-11623-5