Search for pulsed X rays from 3U0833-45 (Vela pulsar) - Rappaport, S.; Bradt, F.; Doxsey, R.; Levine, A.; Spada, G. (Nature Publishing Group, 1974)
http://dx.doi.org/10.1038/251471a0
Keywords: W; V; WW-YZ; TA-TD; U