85In order for there to be an agreement within the meaning of Article 81(1) EC, it is sufficient that the undertakings in question should have expressed their joint intention to conduct themselves on the market in a specific way (Case T-7/89 Hercules Chemicals v Commission [1991] ECR II-1711, paragraph 256, and Case T-9/99 HFB Holding and Others v Commission [2002] ECR II-1487, paragraph 199).
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