E. Campbell

Vertical-actuated electrostatic comb drive with in situ capacitive position correction for application in phase shifting diffraction interferometry

P. Krulevitch, A. Lee, C. McConaghy, 2003 .

Improved performance of the laser guide star adaptive optics system at Lick Observatory

Brian J. Bauman, Donald T. Gavel, Claire E. Max, 1999, Optics & Photonics.