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Ardizzi, M.. (2005). [Studies in Surface Science and Catalysis] Molecular Sieves: From Basic Research to Industrial Applications, Proceedings of the 3rd International Zeolite Symposium (3rd FEZA) Volume 158 || The control of regioselectivity in the liquid-phase hydroxymethylation of 2-methoxyphenol with aqueous formaldehyde. A comparison between zeolites and basic catalysts. , (), 1953–1960. doi:10.1016/s0167-2991(05)80560-9 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research