EC "Guidelines on the applicability of Article 101 of the Treaty on the Functioning of the European Union to horizontal co-operation agreements"

These guidelines set out the principles  for the assessment under Article 101 of the TFEU ("Article 101") of agreements between undertakings, decisions by associations of undertakings and concerted practices (collectively referred to as "agreements") pertaining to horizontal co-operation between competitors. In addition, these guidelines also cover horizontal co-operation agreements between non-competitors, for example, between two companies active in the same product markets but in different geographic markets without being potential competitors. 

Click here to read the guidelines.