TY - RPRT TI - Three-dimensional electron dose calculation using an improved hybrid pencil beam model. AU - Gou Chengjun AU - Wu Zhangwen AU - Luo Zhengming AU - David Jette PY - 2003 DO - 10.1118/1.1538234 UR - https://pubmed.ncbi.nlm.nih.gov/12674242/ ID - 12674242 ER -