V. Friedensen

The Near-Earth Object Human Space Flight Accessible Targets Study (NHATS) List of Near-Earth Asteroids: Identifying Potential Targets for Future Exploration

D. Yeomans, P. Chodas, L. Benner, 2012 .

GRAVITATIONAL AND SPACE BIOLOGY BULLETIN

J. Vernikos, W. Landis, G. Muday, 2000 .

NASA's Asteroid Grand Challenge: Strategy, Results, and Lessons Learned

Jennifer L. Gustetic, V. Friedensen, Jason Kessler, 2018, Space Policy.

Space nuclear power: technology, policy, and risk considerations in human missions to Mars.

V P Friedensen, V. Friedensen, 1998, Acta astronautica.

NASA's Plans for Human Exploration of Near-Earth Asteroids

D. D. Mazanek, V. P. Friedensen, D. Mazanek, 2012 .