Market features can be considered as forerunners of the European Commission's actions aimed at recognizing collusive behaviours. To identify information that might support the Commission in the exercise of its role of antitrust authority we propose a multi criteria approach. Its focus is on the...

1. The Concept of Objectives -- 1.1. The Decision Situation under Consideration -- 1.2. The Concept of Objectives under Certainty -- 1.3. The Concept of Objectives under Uncertainty -- 2. Formal Statement of the Problem -- 2.1. Complete Systems of Objectives -- 2.2. Criteria Vectors -- 2.3. The...