D.L. Bruhwiler, T. Antonsen, J.R. Cary, J. Cooley, V.K. Decyk, E. Esarey, C.G.R. Geddes, C. Huang, A. Hakim, T. Katsouleas, P. Messmer, W.B. Mori, F.S. Tsung, J. Vieira and M. Zhou, “Towards the petascale in electromagnetic modeling of plasma-based accelerators for high-energy physics,” J. Physics: Conference Series 46, 215 (2006).