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This is an update request for the document Price Volatility and the Efficient Energy Portfolio for the United States
by Katarzyna Janczura
Your paper was deposited in Research Papers in Economics
and appears online at http://hdl.handle.net/10.1007/s11293-010-9215-5
Before we are able to make any updates or deletions, you must
ensure that the original record at this location is updated/removed.