@book{13515,
	author = {Folland, G. B. and Kohn, J. J. and Kohn, J. J. ; jt. auth.},
	title = {Neumann problem for the Cauchy-Riemann complex},
	publisher = {Princeton University Press},
	year = {1972},
	series = {Annals of Mathematics studies },
	address = {New Jersey}
}