S. Kredentser, A. Eremin, P. Davidson, V. Reshetnyak, R. Stannarius, and Y. Reznikov, “Dynamic and Permanent Gratings in Suspensions of Absorbing Nanocrystals in Organic Solvent”, Photonics Lett. Pol., vol. 7, no. 4, pp. pp. 91–93, Dec. 2015.