Ibrahim M, Al-Nefaie AH, Butt NS, AboAlkhair AM, Yousof HM, Mahmoud RS. A Novel Chen Extension for Risk Analysis with MOOP and PORT-VAR Assessments under Hydrological Flow Data and Financial Case Study . Pak.j.stat.oper.res. [Internet]. 2026 Mar. 4 [cited 2026 Nov. 12];22(1):103-3. Available from: https://pjsor.com/pjsor/article/view/4683