@book{29985,
	author = {Yourgrau, Wolfgang and Mandelstam, Stanley and Mandelstam, Stanley ; jt. auth},
	title = {Variational principles in dynamics and quantum theory},
	publisher = {Dover},
	year = {2007},
	address = {New York},
	note = {"Purchased under NBHM grant for the year 2007-2008"}
}