1. Gul A. Agha: Actors: A Model of Concurrent Computation in Distributed Systems. MIT Press (Series in Artificial Intelligence) 1986
2. Béla Bollobás: Graph Theory: An Introductory Course. Springer-Verlag (Graduate Texts in Mathematics #63) 1979
3. Peter Dickman: Distributed Object Management in a Non-Small Graph of Autonomous Networks with Few Failures. PhD Thesis, University of Cambridge Computer Laboratory, 1992
4. Peter Dickman: Efficient, Incremental, Distributed Orphan Detection and Actor Garbage Collection. In preparation (extended version of this paper), to be a University of Glasgow, Department of Computing Science Technical Report
5. Peter Dickman and Huw Evans: Material about the DRASTIC project is available from http://www.dcs.gla.ac.uk/∼drastic/