1. Beyer, W.T.: Recognition of topological invariants by iterative arrays. Ph.D. Thesis, MIT, pp. 144 (1969)
2. Moore, E.F.: The firing squad synchronization problem. In: Moore, E.F. (ed) Sequential Machines, Selected Papers, pp. 213–214. Addison-Wesley, Reading MA (1964)
3. Moore, F.R., Langdon, G.G.: A generalized firing squad problem. Inf. Control 12, 212–220 (1968)
4. Shinahr, I.: Two- and three-dimensional firing squad synchronization problems. Inf. Control 24, 163–180 (1974)
5. Umeo, H.: A simple design of time-efficient firing squad synchronization algorithms with fault-tolerance. In: IEICE Transactions on Information and Systems, vol. E87-D (3), pp. 733–739 (2004)