Rodolphe Sepulchre M. Gerard B. Marchand D. Prieels Pencil Beam Scanning: a dynamical approach to proton therapy. 370-375 2000 conf/bibe/2000 BIBE db/conf/bibe/bibe2000.html#SepulchreGMP00 http://doi.ieeecomputersociety.org/10.1109/BIBE.2000.889630