1. NAOMI adaptive optics system for the 4.2-m William Herschel telescope,;Myers,2003
2. The William Herschel telescope
3. The GTC Project: from commissioning to regular science operation. Current performance and first science results,;Alvarez,2010
4. The GTC project: Under commissioning,;Alvarez,2008
5. Alignment and calibration of the W. M. Keck telescope segmented primary mirror,;Witebsky,1990