http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
How to measure the optical quality of focusing solar collectors without laser ray tracing
Mode of access: Internet from the NREL web site. Address as of 11/21/07: http://www.nrel.gov/docs/legosti/old/251.pdf; current access available via PURL.