A Combinatorial Construction of Almost-Ramanujan Graphs Using the Zig-Zag Product

Avraham Ben-Aroya, Amnon Ta-Shma. A Combinatorial Construction of Almost-Ramanujan Graphs Using the Zig-Zag Product. SIAM J. Comput., 40(2):267-290, 2011. [doi]

Abstract

Abstract is missing.