http://www.chalmers.se/en/departments/chem/news/Pages/Liquid-storage-of-solar-energy-%E2%80%93-more-effective-than-ever-before.aspx
http://www.chalmers.se/en/departments/chem/news/Pages/Liquid-storage-of-solar-energy-%E2%80%93-more-effective-than-ever-before.aspx
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