Autcha Araveeporn. (2015) The estimating nonlinear autoregressive model and conditional heteroscedastic nonlinear autoregressive model by using smoothing spline and penalized spline methods. King Mongkut's Institute of Technology Ladkrabang:ม.ป.ท.Autcha Araveeporn. 2015. The estimating nonlinear autoregressive model and conditional heteroscedastic nonlinear autoregressive model by using smoothing spline and penalized spline methods. ม.ป.ท.:King Mongkut's Institute of Technology Ladkrabang;Autcha Araveeporn. The estimating nonlinear autoregressive model and conditional heteroscedastic nonlinear autoregressive model by using smoothing spline and penalized spline methods. ม.ป.ท.:King Mongkut's Institute of Technology Ladkrabang, 2015. Print.