Katias, P., I. Susanto, T. Herlambang, and M. Anshori. “Unscented Kalman Filter and H-Infinity for Travel Company Stock Price Estimation”. Pattimura International Journal of Mathematics (PIJMath), Vol. 1, no. 2, Nov. 2022, pp. 81-88, doi:10.30598/pijmathvol1iss2pp81-88.