A. O. W. Kaya, A. Suryani, J. Santoso, and M. S. Rusli, “The Effect of Gelling Agent Concentration on the Characteristic of Gel Produced From the Mixture of Semi-refined Carrageenan and Glukomannan”, IJSBAR, vol. 20, no. 1, pp. 313–324, Feb. 2015.