Sheykhei, Rozhin , Fallah, Hormoz, Niknejad,  Niknejad, Dastan, Salman , Barari Tari, Davood. “Documenting production process and estimating the yield gap of Rice by comparative performance analysis (CPA) in Sari region.” Journal of Crop Production Research (JCPR), vol. 17, no. 1, 2025, pp. 1135-1152.