@book{332316,
	title = {Determination of optimal number of beams in direct machine parameter optimization-based intensity modulated radiotherapy for head and neck cases},
	publisher = {Journal of Medical Physics},
	url = {http://www.jmp.org.in/showBackIssue.asp?issn=0971-6203;year=2016;volume=41;issue=2;month=April-June}
}