Emilio Artacho, E. Anglada, O. Diéguez, J. D. Gale, A. García, J. Junquera, R. M. Martin, P. Ordejón, J. M. Pruneda, D. Sánchez-Portal and J. M. Soler: “The SIESTA method; developments and applicability”. Journal of Physics: Condensed Matter, 20 (6), 064208, (2008), url: https://stacks.iop.org/0953-8984/20/i=6/a=064208