1. SWD(2016) 312 final;Commission Staff Working Document, Preliminary Report on the E-commerce Sector Inquiry, Brussels, 15.9,2016
2. fn (5), p. 19; see also Hal R. Varian, Intermediate Microeconomics -A modern Approach;OECD,2014
3. Competition Enforcement in Oligopolistic Markets;DAF/COMP(2015)2, n 13,2015
4. et seqq;Michael K Vaska;Conscious Parallelism and Price-fixing: Defining the Boundary,1985
5. A. Cournot, Recherches sur les principes mathématiques de la théorie des richesses. Paris, Calmann-Lévy, 1974, 248 p.