@book{16341,
	author = {NATO Advanced Research Institute on "Nonlinear Optimization", Cambridge, July 13-24, 1981 and Powell, M. J. D.},
	title = {Nonlinear optimization 1981; proceedings of the NATO advanced research institute /},
	publisher = {Academic Press,},
	year = {1982},
	series = {NATO conference series, series 2-systems science},
	address = {New York:}
}