WebPET: An Online Tool for Lexicographic Decision Making. - Ronald R. Yager; Marek Z. Reformat; Giray Gumrah (IEEE Intell. Syst., 2010)

Fuzziness, OWA and linguistic quantifiers for web selection processes. - Ronald R. Yager; Marek Z. Reformat; Giray Gumrah (FUZZ-IEEE, 2011)

Using a web Personal Evaluation Tool - PET for lexicographic multi-criteria service selection. - Ronald R. Yager; Giray Gumrah; Marek Z. Reformat (Knowl. Based Syst., 2011)