@proceedings {181, title = {Terahertz grid frequency doublers}, year = {1995}, publisher = {Citeseer}, url = {https://www.nrao.edu/meetings/isstt/papers/1995/1995199206.pdf}, author = {Chiao, Jung-Chih and Markelz, Andrea and Li, Yongjun and Hacker, Jonathan and Crowe, Thomas and Allen, James and Rutledge, David} }