Tsz Chiu Kwok, Lap Chi Lau. Lower Bounds on Expansions of Graph Powers. In Klaus Jansen, José D. P. Rolim, Nikhil R. Devanur, Cristopher Moore, editors, Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques, APPROX/RANDOM 2014, September 4-6, 2014, Barcelona, Spain. Volume 28 of LIPIcs, pages 313-324, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2014. [doi]
Abstract is missing.