http://www.codeplex.com/ValidationAspects
http://blog.getpaint.net/2008/12/06/a-fluent-approach-to-c-parameter-validation/
http://www.15seconds.com/issue/060615.htm
http://news.puryel.com/bitmap-raster-graphics-and-photo-software/open-source-software/http://news.puryel.com/bitmap-raster-graphics-and-photo-software/open-source-software/