Ù…ØÙ…Ø¯ Ø³Ø¹ÙŠØ¯ Ø¬Ù„ÙˆØ¯, Ø., & Ù…ØÙ…ÙˆØ¯ Ø§Ù„Ù‚Ø·Ø§Ù†, Ù. 2018 Oct 4. Ø§Ù„ØªØ£Ø«ÙŠØ± Ø§Ù„ØªØÙÙŠØ²ÙŠ Ù„Ø¹ØµÙŠØ± Ø§Ù„Ù„ÙŠÙ…ÙˆÙ† ÙÙŠ Ø§Ù„Ø³Ø¹Ø© Ø§Ù„ÙƒÙ„ÙŠØ© Ù„Ù…Ø¶Ø§Ø¯Ø§Øª Ø§Ù„Ø§ÙƒØ³Ø¯Ø© ÙˆØ§Ù„Ù‡Ø±Ù…ÙˆÙ†Ø§Øª Ø§Ù„Ø°ÙƒØ±ÙŠØ© ÙÙŠ Ø°ÙƒÙˆØ± Ø§Ù„Ø£Ø±Ø§Ù†Ø¨ Ø§Ù„Ù†ÙŠÙˆØ²Ù„Ù†Ø¯ÙŠØ© Ø§Ù„Ø¨ÙŠØ¶ Ø§Ù„Ù…Ø³Ù…Ù†Ø© ØªØ¬Ø±ÙŠØ¨ÙŠØ§Ù‹. Tikrit Journal of Pure Science. [Online] 21:5