@book{17256,
	author = {Ablowitz, M. J. and Clarkson, P. A. and Clarkson, P. A. ; jt. auth.},
	title = {Solitons, nonlinear evolution equations and inverse scattering},
	publisher = {Cambridge University Press},
	year = {1991},
	series = {London Mathematical Society lecture note series},
	address = {Cambridge}
}