1. Acton, D. S., and R. C. Smithson: 1991, ‘Solar astronomy with a 19-segment adaptive mirror’, in SPIE 1542, 159–164
2. Blackwood, G. H., P. A. Davis, and M. A. Ealey: 1991, `Characterization of MMN:BA electrostrictive plates and SELECT actuators at low temperatures’, in SPIE 1543, 422–429.
3. Bonaccini, D., G. Brusa, S. Esposito, P. Salinari, P. Stefanini, and V. Biliotti: 1991, `Adaptive optics wavefront corrector using addressable liquid crystal retarders: II’, in SPIE 1543, 133–143.
4. Clampin, M., S. T. Durrance, D. A. Golimowski, and R. H. Barkhouser: 1991, `The Johns Hopkins adaptive optics coronograph’, in SPIE 1542, 165–174.
5. Doel, A. P., C. N. Dunlop, J. V. Major, R. M. Myers, and R. M. Sharples: 1991, `MARTINI: system operation and astronomical performance’, in SPIE 1542, 319–326; `MARTINI: sensing and control system design’, in SPIE 1543, 472–478.