Pandey, J. C.; Singh, K. P.; Sagar, R.; Drake, S. A.
(2002)
We present photometric observations of four stars that are
optical counterparts of soft X-ray/EUV sources, namely 1ES 0829+15.9,
1ES0920-13.6, 2RE J110159+223509 and 1ES 1737+61.2. We have dis-
covered periodic ...