Book review: ROGER VAN DEN BERGH, Comparative Competition Law and Economics (Edward Elgar Publishing, Cheltenham 2017) / Hellenic Review of European Law 2017 [263-265, in English] & Ελληνική Επιθεώρηση Ευρωπαϊκού Δικαίου (=Elliniki Epitheorisi Evropaikou Dikaiou) 4/2017 [543-544, in Greek]