title = {Improvement of radiotherapy treatment delivery accuracy using an electronic portal imaging device},
author = {M. L. P. Dirkx and J. C. J. de Boer and B. J. M. Heijmen}, journal = {Radiat Prot Dosimetry}, month = {December}, pages = {70-79}, url = {http://rpd.oxfordjournals.org/cgi/content/abstract/121/1/70}, volume = {121}, year = {2006},
keywords = {imported }