“NVESTIGATE THE RELATIONSHIP BETWEEN UNSYSTEMATIC RISK AND PROFIT GROWTH OF ACCEPTED COMPANIES IN TEHRAN STOCK EXCHANGE” (2014) Singaporean Journal of Business Economics and Management, 2((11), pp. 147–154. Available at: https://singaporeanjbem.com/index.php/SJBEM/article/view/274 (Accessed: 24 June 2026).