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2. Contract ENK5-CT-2000-20336-INVESTIRE Network: deliverable 2.5., final technical report.
3. SANDIA report SAND98-1513, Review of power quality applications of energy storage systems.
4. SANDIA report SAND2002-1314, Energy storage opportunities analysis.
5. SANDIA report SAND2003-0362, Innovative business cases for energy storage in a restructured electricity marketplace.