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Conference or Workshop Item
Fetais, Noora and Cheng, Peter C-H (2010) An experiment to evaluate constraint diagrams with novice users. In: 6th International Conference on the Theory and Application of Diagrams, Portland, OR.
Fetais, Noora (2013) Evaluation of the usability of constraint diagrams as a visual modelling language: theoretical and empirical investigations. Doctoral thesis (PhD), University of Sussex.