Stanujkić, D. and Karabašević, D. 2018. An extension of the WASPAS method for decision-making problems with intuitionistic fuzzy numbers: a case of website evaluation. Operational Research in Engineering Sciences: Theory and Applications. 1, 1 (Dec. 2018), 29–39. DOI:https://doi.org/10.31181/oresta19012010129s.