1. Experiment M-131—Human vestibular function;Graybiel,1974
2. Space motion sickness: Skylab revisited;Graybiel;Aviation, Space and Environ. Med.,1980
3. A model for vestibular function altered gravitational states;Baumgarten,1979
4. Possible change in the paired operation of the vestibular apparatus during weightlessness;Yegorov;Kosmicheskaya Biologiya i Meditsina (Moscow),1969