Title, Achnowledgements, Foreword, Introduction. In Alan Dearle, Gail M. Shaw, Stanley B. Zdonik, editors, Implementing Persistent Object Bases, Principles and Practice, Proceedings of the Fourth International Workshop on Persistent Objects, 23-27 September 1990, Martha s Vineyard, MA, USA. Morgan Kaufmann, 1990. [doi]
Abstract is missing.