There's a new paper on the diffusion method by Jeff Blyth: http://d-i-yscience.blogspot.ch/2016/04/holograms-on-wine-glasses-and-glass.html?m=1
Though dealing with holographic recording material, it might provide some interesting info for APUG AgX emulsion makers too.
Though dealing with holographic recording material, it might provide some interesting info for APUG AgX emulsion makers too.
