We examine if the Nordic power market, Nord Pool, has been competitive or if electricity suppliers have had market power. Specifically, since the evolution from national markets to a multi-national and largely deregulated power market has taken place stepwise, we also examine how the degree of...

Substitution possibilities between brand name pharmaceuticals are analysed. The analysis is based on data from three different markets; the prescription drug market for beta-blocking agents, the 'over the counter' market for purgatives and the hospital market for two pharmaceutical treatments...