M. A. Shafi, M. S. Rusiman, K. Jacob, N. S. A. Hamzah, N. C. Him, and N. Mohamad, “Prediction in a Hybrid of Fuzzy Linear Regression with Symmetric Parameter Model and Fuzzy C-Means Method Using Simulation Data”, IJET, vol. 7, no. 4.30, pp. 419–422, Nov. 2018, doi: 10.14419/ijet.v7i4.30.22351.