@article{article, title = {{Spectroscopic determination of the electron distribution in a quantum cascade structure}}, url = {{}}, year = {{1999}}, month = {{10}}, author = {{Wilson LR and Keightley PT and Cockburn JW and Duck JP and Skolnick MS and Clark JC and Hill G and Moran M and Grey R}}, volume = {{75}}, journal = {{APPL PHYS LETT}}, issue = {{14}}, pages = {{2079-2081}}, note = {{Accessed on 2024/12/22}}}