@article{Cheng-1999-JIMW,
	year = {1999},
	volume = {18},
	pages = {89-92},
	author = {Cheng, W. C. and Xia, J. B. and Li, G. H. and Tan, P. H. and Zheng, H. Z. },
	title = {Radiative transition in delta-doped {G}a{A}s superlattices},
	journal = {Journal of Infrared and Millimeter Waves}
}