%0 Journal Article %T Holographic interferometry techniques using photorefractive crystals of sillenite family Bi 12 SiO 20 (BSO) and their applications in analysis of surfaces %A Gesualdi, M. R. R. %J Proceedings of SPIE %V 4419 %N 1 %P 256-260 %@ 0277-786X %D 2001-08-14 %I SPIE %~ DeepDyve