1. Herschel-HIFI: The Heterodyne Instrument for the Far-Infrared;de Graauw;The Promise of the Herschel Space Observatory,2001
2. The HIFI Focal Plane Unit;Jackson,2002
3. The Focal Plane Optics of HIFI, a Heterodyne Instrument for the Herschel Space Observatory;Whyborn,2004
4. MM-Wave Optics Design & Verification;O’Sullivan,2002