1. Radiological use of fast protons;Wilson;Radiology,1946
2. Pituitary irradiation with high-energy proton beams: a preliminary report;Lawrence;Cancer Res.,1958
3. Proton beam irradiation of uveal melanomas;Gragoudas;Arch. Ophthalmol.,1982
4. Particle Therapy Patient Statistics (per end of 2015), PTCOG. (n.d.). https://www.ptcog.ch/archive/patient_statistics/Patientstatistics-updateDec2015.pdf (accessed May 26, 2018).
5. New insights on cell death from radiation exposure;Prise;Lancet Oncol.,2005