Who the economist who predicted Russia's dollar reserves after the fall of communism to the last dollar ?

He's a big stock market analyist and he also predicted a double-dip in the economy. He was also sent to jail because of some publications. I need the name and some sources where I can read his materials please. I remember it was something like Martin someone but I'm not sure. If you can give me his name I would appreciate it. Thank you in advance !