GUPTA, R.K., R. PRASAD, and SURANDER SINGH. “Vapour Phase Methylation of Phenol Over Ni1-xMnxFe2O4 Type Ferrospinels”. Asian Journal of Chemistry 19, no. 5 (March 30, 2010): 3780–3788. Accessed October 3, 2024. https://asianpubs.org/index.php/ajchem/article/view/13330.