1. ALMA Project http://www.alma.nrao.edu.
2. HERSHEL Project http://sci.esa.int/science-e/www/area/index.cfm?fareaid=16.
3. SOFIA Project http://www.sofia.usra.edu/Sofia/team/sofia_team_nasa.html.
4. Terahertz Technology;Siegel;IEEE Trans. on Microwave Theory and Techniques,2002
5. THz spectroscopy of biological molecules;Globus;J. of Bio. Phys.,2003