@book{67403,
	author = {Beals, Michael, and University of Minnesota.},
	title = {Microlocal analysis and nonlinear waves /},
	publisher = {Springer-Verlag,},
	year = {c1991.},
	address = {New York :},
	note = {"Based on the proceedings of a workshop which was an integral part of the 1988-1989 IMA program"--Foreword.}
}