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Rezaie, Kamran; Ramiyani, Sara Saeidi; Nazari-Shirkouhi, Salman; Badizadeh, Ali . (2014). Evaluating performance of Iranian cement firms using an integrated fuzzy AHP–VIKOR method. Applied Mathematical Modelling, 38(21-22), 5033–5046. doi:10.1016/j.apm.2014.04.003 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research