J. Werker

Extraterrestrial Subsurface Technology Test Bed: Human Use and Scientific Value of Martian Caves

S. L. Thompson, Penelope J. Boston, Reid Frederick, 2004 .

Human utilization of subsurface extraterrestrial environments.

S. L. Thompson, T. R. Meyer, P. Boston, 2003, Gravitational and space biology bulletin : publication of the American Society for Gravitational and Space Biology.