Jantana*, Phongsaphen, and Prapaisri Sudasna-na-Ayudthya. 2018. “Estimating Parameters in Autoregressive Process During Rolling Periods”. CURRENT APPLIED SCIENCE AND TECHNOLOGY 6 (2a). Bangkok, Thailand:424-33. https://li01.tci-thaijo.org/index.php/cast/article/view/147958.