@proceedings {319,
	title = {Far-infrared harmonic generation from semiconductor heterostructures},
	volume = {1854},
	year = {1994},
	pages = {48-55},
	author = {Markelz, A.G. and Gwinn, E. G. and Sherwin, M. S. and Heyman, J. N. and Nguyen, C. and Kroemer, H.}
}
