TY - RPRT TI - Optimization of parameters for fitting linear accelerator photon beams using a modified CBEAM model. AU - K Ayyangar AU - I Daftari AU - J Palta AU - N Suntharalingam DO - 10.1118/1.596314 UR - https://pubmed.ncbi.nlm.nih.gov/2511397/ ID - 2511397 ER -