Rehmuliana Niken Sagala, Tri Andri Hutapea, Sesy Ophelia Tampubolon, Ines Monalisa Rumapea, and Septika Aulia Putri, “Implementation of the Mamdani Fuzzy System as a Decision Support for Contract Extensions for Non-Staff Employees in Manufacturing Companies”, j. of artif. intell. and eng. appl., vol. 5, no. 3, pp. 4334–4338, Jun. 2026.