Several competition authorities have accused petrol retailers of engaging in collusive conduct, which results in alleged “excessive” prices as well as simultaneous price setting across filling stations. However, petrol retailers must exert a substantial amount of market power if they are to...

Multimarket contact is perceived to be one of those factors, which can facilitate and sustain implicit collusive (cooperative) arrangements. This paper attempts to develop new approaches to study the interdependence of firm behaviour across markets, especially in the context of differentiated...