1. A universal parameterized gradient‐based method for photon beam field size determination. Issue 11 (13th October 2017) Authors: Lebron, Sharon; Yan, Guanghua; Li, Jonathan; Lu, Bo; Liu, Chihray Journal: Medical physics Issue: Volume 44:Issue 11(2017) Page Start: 5627 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗