http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
As a full-featured, free alternative to Adobe Photoshop, GIMP is one of the world's most popular open source projects. The latest version of GIMP (2.8) brings long-awaited improvements and powerful new tools to make graphic design and photo manipulation even easier-but it's still a notoriously challenging program to use.
Electronic reproduction. Boston, MA : Safari, Available via World Wide Web. 2012.