Ø¹Ø¨Ø§Ø³ Ù…ØÙ…Ø¯, Ø., & Ø®Ù„ÙŠÙ„ ØºÙØ§Ø±, Ù. 2018 Oct 1. Ø¯Ø±Ø§Ø³Ø© Ø§Ø³ØªÙ‚Ø±Ø§Ø±ÙŠØ© Ø§Ù„ØªØ¨Ø§ÙŠÙ†Ø§Øª Ø§Ù„Ù…Ø´Ø±ÙˆØ·Ø© Ù„Ù†Ù…Ø§Ø°Ø¬ GARCH Ù…Ø¹ ØªØ·Ø¨ÙŠÙ‚. Tikrit Journal of Pure Science. [Online] 21:4