Ariel V Sky Survey - extended observations of the x-ray binaries Cen X-3, Vel XR-1, Cyg X-1 and Cyg X-3 Pounds, K. A. ; Peacock, A. ; Elvis, M. ; Ricketts, M. J. ; Turner, M. J. ; Watson, M. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: June 1976 Bibcode: 1976BAAS....8R.438P