Selecting the most representative sample is NP-hard: Need for expert (fuzzy) knowledge. - J. Esteban Gamez; François Modave; Olga Kosheleva (FUZZ-IEEE, 2008)

Intelligence techniques are needed to further enhance the advantage of groups with diversity in problem solving. - Oscar Castillo 001; Patricia Melin; J. Esteban Gamez; Vladik Kreinovich; Olga Kosheleva (HIMA, 2009)

Intermediate Degrees Are Needed for the World to Be Cognizable: Towards a New Justification for Fuzzy Logic Ideas. - Hung T. Nguyen 002; Vladik Kreinovich; J. Esteban Gamez; François Modave; Olga Kosheleva (Foundations of Computational Intelligence (2), 2009)