A Continuous Knapsack Problem with Separable Convex Utilities: Approximation Algorithms and Applications." Levi, Retsef, Georgia Perakis and Gonzalo Romero. Operations Research Letters Vol. 42, No. 5 (2014): 367-373.

Price of Anarchy in Supply Chains with Partial Positive Externalities." Perakis, Georgia and Wei Sun. Operations Research Letters Vol. 40, No. 2 (2012): 78-83.

On the Efficiency of Price Competition." Farahat, Amr and Georgia Perakis. Operations Research Letters Vol. 39, No. 6 (2011): 414– 418.

A Nonnegative Extension of the Affine Demand Function and Equilibrium Analysis for Multiproduct Price Competition." Farahat, Amr and Georgia Perakis. Operations Research Letters Vol. 38, No. 4 (2010): 280-286.

Profit Loss in Differentiated Oligopolies." Farahat, Amr and Georgia Perakis. Operations Research Letters Vol. 37, No. 1 (2009): 43-46.