1. Real time acoustical to optical convertors, State of the Art;Greguss;Ultras Int 1973 Conference Proc,1973
2. New Liquid crystals acoustical to optical display;Greguss;Acustica,1973
3. Vizualization of an ultrasonic beam by means of liquid crystals;Manaranche;Brit J of NDT,1976
4. Mapping ultrasonic fields with cholesteric liquid crystals;Cook;Ultrasonics,1971
5. Liquid crystals in NDT;Fergason;Applied Optics,1968