Stephen Carter & Martin McCauley 
Leadership and Succession in the Soviet Union, Eastern Europe, and China [PDF ebook] 

First Published in 1986. The papers in this volume were originally delivered at a series of seminars held at the School of Slavonic and East European Studies, University of London, between January and May 1984. The inspiration for the scheme was the Soviet succession struggle of 1982 but further reflection indicated that the problem of elderly leaderships, and the apparent absence of legitimate succession mechanisms, applied to nearly all communist systems.