A.A, Ogacho, Ajuoga P, and Aduda B.O. 2015. “Suppression of Anatase to Rutile Phase Transformation of Niobium Doped TiO2 Synthesized by High Temperature Diffusion Technique”. International Journal for Innovation Education and Research 3 (6): 140-46. https://doi.org/10.31686/ijier.vol3.iss6.388.