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Changkakoti, R and Pappu, SV (1989) Towards optimum diffraction efficiency for methylene blue sensitized dichromated gelatin holograms. In: Optics & Laser Technology, 21 (4). pp. 259-263.
Pappu, SV and Changkakoti, R (1989) Phase holograms recorded in methylene-blue sensitized dichromated gelatin using a helium-neon laser. In: Jena Review, 34 (4).