References
Study of Elastogel Pads Used as Surfce Bolus Materail
in High Energy Photon and Electron Therapy
Francis Chang et al.
Int.Jnr Radiation OncologyBiol.Phys.Vol 22 pp.191-193
A Dosimetric Summary of Common Bolus Material
Kevin p.McCollough
Poster Presentation :AAPM 1992 Calgary Canada 
