Mukaromah, A. H., G. T. M. Kadja, R. R. Mukti, I. R. Pratama, M. A. Zulfikar, and B. Buchari. “The Surface-to-Volume Ratio of the Synthesis Reactor Vessel Governing the Low Temperature Crystallization of ZSM-5”. Journal of Mathematical and Fundamental Sciences, vol. 48, no. 3, Dec. 2016, pp. 241-5, doi:10.5614/j.math.fund.sci.2016.48.3.5.