- -, عبد, إسراء. A Study of the stability for one of non-linear autoregressive models with trigonometric terms with application. IQJOSS [Internet]. 2025 Jun. 25 [cited 2025 Aug. 5];11(2):410-32. Available from: https://rjps.uomosul.edu.iq/index.php/stats/article/view/20944