Jeffries, R.D., Jewell, S.J., Barstow, M.A., Bromage, G.E., Hodgkin, S.T., Mason, K.O., Matthews, L., Mittaz, J.P.D., Pye, J.P., Quenby, J.J., Rosen, S.R., Sidher, S.D., "EUV emission from a sample of late-type stars observed by the ROSAT wide field camera", Vistas in Astronomy, 1991