Forest J., L. Eliasson, A. Hilgers, A New Spacecraft Plasma Simulation Software, PicUp3D/SPIS, in proceedings of 7th Spacecraft Charging Technology Conference, pp.515-520, ESA/SP-476, ISBN No 92-9092-745-3, ESA-ESTEC, Noordwijk, The Netherlands, 23-27 April 2001.
