Analysis of the activity of the eclipsing binary WZ Cephei G. Djurašević, M. Zakirov, A. Hojaev and G. Arzumanyants Astron. Astrophys. Suppl. Ser., 131 1 (1998) 17-23 Published online: 15 July 1998 DOI: 10.1051/aas:1998248