C. Huang, W. An, V.K. Decyk, W. Lu, W.B. Mori, F.S. Tsung, M. Tzoufras, S. Morshed, T. Antonsen, B. Feng, T. Katsouleas, R.A. Fonseca, S.F. Martins, J. Vieira, L.O. Silva, E. Esarey, C.G.R. Geddes, W.P. Leemans, E. Cormier-Michel, J.L. Vay, D.L. Bruhwiler, B. Cowan, J.R. Cary and K. Paul, “Recent results and future challenges for large scale particle-in-cell simulations of plasma-based accelerator concepts,” J. Physics: Conf. Series 180, 012005 (2009).