@book{16481,
	author = {Lions, J. L. and Mitter, S. K.},
	title = {Optimal control of systems governed by partial differential equations},
	publisher = {Springer-Verlag,},
	year = {1971},
	series = {Die Grundlehren der Mathematischen Wissenschaften},
	address = {Berlin:},
	note = {"Translated by S. K. Mitter".}
}