In the last decades, more and more countries have enacted competition laws, understanding the importance of this process in providing a normal functioning of the economy. Analyzing competition policy effectiveness is important not only because of the recent extent of the phenomenon, but also...

Cartel detection is usually viewed as a key task of competition authorities. A special case of cartel is the parallel behaviour in terms of price selling. This type of behaviour is difficult to assess and its analysis has not always conclusive results. For evaluating such behaviour the data...