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    Robust, affordable, semi-direct Mars mission

    Salotti, Jean-Marc | Elsevier | 2016
    Keywords: Mars ascent vehicle , Mars sample return , Trans-Mars injection , Manned Mars mission , Semi-direct Mars mission

    Simplified scenario for manned Mars missions

    Marc Salotti, Jean | Elsevier | 2011
    Keywords: Mars Direct , Mars semi-direct , Mars ascent vehicle , Mars orbit , trans-Mars injection