@inproceedings{RenGaoHovenieretal.2010, author = {Y. Ren and J. R. Gao and J. N. Hovenier and R. Higgins and W. Zhang and A. Bell and B. Klein and T. M. Klapwijk and S. C. Shi and T.-Y. Kao and S. Kumar and Q. Hu and J. L. Reno}, title = {Heterodyne gas cell measurements at 2.9 THz using a quantum cascade laser as local oscillator}, series = {Holland, Zmuidzinas (Eds.): Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V. San Diego, California, USA, June 27, 2010. Proc. SPIE 7741}, publisher = {SPIE}, doi = {10.1117/12.857658}, pages = {774118}, year = {2010}, language = {en} }