There was a mixed showing for German solar power companies Q-Cells and Solon, after both alluded to difficulties in trading in the first quarter and for the rest of the year.

FORBES: Europe Markets Brief

The main concession they make to the q-sceptics is to agree that, if a certain kind of intangible asset increases monopoly power in the American economy, then q, properly measured, would be lower than their estimate.

ECONOMIST: Letter of credit | The