Software Practice & Experience June 98, Vol 28, No 7 p 703 Reusable Coordinator Modules for Massively Concurrent Applications by F. Arbab, C.L. Blom, F.J. Burger and C.T.H. Everaars p 737 External Relationships of Objects by R. Mikkilineni, M.A. Ketabchi and S. Dasananda