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    A comparison of nuclear thermal rocket development cost and schedulefor piloted missions to Mars

    CLARK, JOHN / BOROWSKI, STANLEY / SEFCIK, ROBERT et al. | AIAA | 1993

    A comparison of nuclear thermal rocket development cost and schedule for piloted missions to Mars

    Clark, John S. / Borowski, Stanley K. / Sefcik, Robert J. et al. | NTRS | 1993

    Affordable Development and Demonstration of a Small NTR Engine and Stage: A Preliminary NASA, DOE and Industry Assessment (AIAA 2015-3774)

    Borowski, Stanley K. / Sefcik, Robert J. / Fittje, James J. et al. | British Library Conference Proceedings | 2015

    Affordable Development and Demonstration of a Small NTR Engine and Stage: How Small is Big Enough?

    Borowski, Stanley K. / Sefcik, Robert J. / Fittje, James E. et al. | AIAA | 2015

    Nuclear electric propulsion: A better, safer, cheaper transportation system for human exploration of Mars

    Clark, John S. / George, Jeffrey A. / Gefert, Leon P. et al. | NTRS | 1994

    Affordable Development and Demonstration of a Small NTR Engine and Stage: How Small is Big Enough? (AIAA 2015-4524)

    Borowski, Stanley K. / Sefcik, Robert J. / Fittje, James E. et al. | British Library Conference Proceedings | 2015