Husin, H., Pontas, K., Sy, Y., Syawaliah, S. and Saisa, S. 2014. Synthesis of Nanocrystalline of Lanthanum Doped NaTaO3 and Photocatalytic Activity for Hydrogen Production. Journal of Engineering and Technological Sciences. 46, 3 (Sep. 2014), 318-327. DOI:https://doi.org/10.5614/j.eng.technol.sci.2014.46.3.6.