1. Expanders, sorting in rounds and superconcentrators of limited depth;Alon,1985
2. Meanders, Ramsey Theory and lower bounds for branching programs;Alon,1986
3. Meanders and their applications in lower bounds arguments;J. Comput. System Sci.,1988
4. Extremal Graph Theory;Bollobás,1978
5. Superconcentrators, generalizers and generalized connectors (preliminary version);Dolev,1983