@book{332393,
	title = {Estimation of absorbed dose in clinical radiotherapy linear accelerator beams: Effect of ion chamber calibration and long-term stability},
	publisher = {Journal of Medical Physics},
	url = {http://www.jmp.org.in/showBackIssue.asp?issn=0971-6203;year=2013;volume=38;issue=4;month=October-December}
}