Using Metadata to Query Passive Data Sources.
Int. J. Cooperative Inf. Syst., 2000
Using Metadata to Query Passive Data Sources.
Proceedings of the Thirty-First Annual Hawaii International Conference on System Sciences, 1998
The Hamiltonicity of Directed sigma - tao Cayley Graphs (or: A Tale of Backtracking).
Discret. Appl. Math., 1995