Papi, Neda., et all. "Photocatalytic degradation of water pollutant dye by solid state synthesized Ni1-xLnxSb2O6 (Ln=Eu, Gd, Ho and Yb) nanocomposites." International Journal of Nano Dimension (Int. J. Nano Dimens.), vol. 11, no. 4, pp. 377-391,