1. Comment on ‘Tolerance analysis using fuzzy sets’ and ‘A procedure for multiple-aspect decision making’;Dubois;Internat. J. Systems Sci.,1978
2. Operations on fuzzy numbers;Dubois;Internat. J. Systems Sci.,1978
3. Algorithmes de plus courts chemins pour traiter des données floues;Dubois;R.A.I.R.O. Op. Res.,1978
4. Concepts of probabilistic sets;Hirota,1977
5. Tolerance analysis using fuzzy sets;Jain;Internat. J. System Sci.,1977