1. Baker, H.G., and Hewitt, C. The incremental garbage collection of processes. A.I. Memo 454, M.I.T., Cambridge, MA, Dec. 1977.
2. Burton, F.W. Controlling speculative computation in a parallel functional programming language. In: Proc. 5th Int'l Conf. on Distributed Computing Systems, Denver, CO, IEEE Comp. Soc. Press, May 1985, 453–458.
3. Chandy, K.M., and Lamport, L. Distributed snapshots: Determining global states of distributed systems. ACM TOPLAS 3, 1 (Feb. 1985), 63–75.
4. Chandy, K.M., and Misra, J. Parallel Program Design: A Foundation. Addison-Wesley, Reading, MA, 1988.
5. Ciepielewski, A., and Haridi, S. Control of activities in the or-parallel token machine. In: Proc. IEEE 1984 Int'l Symp. on Logic Programming, IEEE, 1984, 49–57.