This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
[1] Gabriela Kiryakova, Nadezhda Angelova, Lina Yordanova, “GAMIFICATION IN EDUCATION “.Search in Google Scholar
[2] K. Arrow, „The Principle of Rationality in Collective Decisions” (1952), apud A. Sen (2002: p. 328)Search in Google Scholar
[3] Aidan Lyon, Eric Pacui, „The Wisdom of Crowds: Methods of Human Judgement Aggregation”, University of Maryland, College Park.Search in Google Scholar