21.   It may well be that they want to maintain the pretense of a parallel currency to avoid a formal devaluation.

22.   Although tourists are expected to use euros in Switzerland, Roth said he believed the euro was unlikely to become a parallel currency to the Swiss franc.

23.   They note that parallel currencies have an inauspicious history around the world.

24.   It may well be that they want to maintain the pretence of a parallel currency to avoid a formal devaluation.

25.   Steve Hanke, a Johns Hopkins University economist who advised former Argentine president Carlos Menem, said there was little hope for maintaining parallel currencies after the default.