1. 1National Aeronautics and Space Administration. 1997. NASA Task Force on Countermeasures: Final Report.
2. 3Diamandis, P. H. 1997. Countermeasure and artificial gravity.InFundamentals of Space Life Sciences, S. E. Churchill, Ed.: 159-175. Krieger. Malabar, Fla.
3. 4Shipov, A. A. 1997. Artificial gravity.InSpace Biology and Medicine: Humans in Spaceflight, Vol. 3, Book 2; A. E. Nicogossian, S. R. Mohler, O. G. Gazenko and A. I. Gregoriev, Eds.: 349-363. Am. Inst. Aeronaut. Astronaut. Reston, VA.