Title The effects of a 12-hour shift in the wake-sleep cycle on physiological and biochemical responses and on multiple task performance / E.A. Higgins ... [et al.] ; Civil Aeromedical Institute, Federal Aviation Administration, Oklahoma City, Okla., Air Force Office of Scientific Research (AFSC) Arlington, Va., Human Studies Branch, NASA-Ames Research Center, Moffett Field, Calif. [electronic resource]