... hypotheses by estimating the following two equations for each of the six considered interest rates:13 tiiitititiititiuDMRBIMRBIBR,,,,,, GJED (9.a) titititiitiitivMRBIMRuBR,,,,1,,'' ... The Lerner index derives from the monopolist's profit maximisation condition as price minus marginal cost, divided by price. The monopolist maximises profits when the Lerner index is equal ... credit institutions, comprising mainly the major Landesbanken, are included. In addition to certain public finance duties, the Landesbanken also offer banking activities in competition with private...