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