Optical Observations of the Active Star RE J2220+493 Robb, R. M. ; Steinbring, E. ; Balogh, M. ; Ansell, B. ; Gladders, M. ; Karr, J. ; Gilbert, D. ; Hughes, W. Abstract Publication: Information Bulletin on Variable Stars Pub Date: December 1995 Bibcode: 1995IBVS.4281....1R