Yüksel, S., Karaman, F., Eti, S., Dinçer, H., & Ergün, E. (2026). Strategic Procurement Prioritization for Sustainable Aviation Fuel: An Integrated Pythagorean Fuzzy SWARA–RAM Decision Support Framework. Spectrum of Engineering and Management Sciences, 4(1), 255-280. https://doi.org/10.31181/sems41202692