M. T. A. P. Kresnowati, T. Setiadi, T. M. Tantra, and D. Rusdi, “Microbial Production of Xylitol from Oil Palm Empty Fruit Bunch Hydrolysate: Effects of Inoculum and pH”, J. Eng. Technol. Sci., vol. 48, no. 5, pp. 523-533, Nov. 2016.