The title of the work is "Generation, Management and Processing of bidirectional texture functions (BTFs) for photo realisitic generation of images with complex surface models"
So, it should be much clearer now. ;)
Hey Niko this looks like a really great paper.. well I dont understand german so I used google to translate it here is the like for all of you out there who want to read it.. it not perfect though but atleast its something http://www.google.com/translate?u=http%3A%2F%2F64.233.183.104%2Fsearch%3Fq%3Dcache%3Aa64ehjySm3IJ%3Awww.irrlicht3d.org%2Fpapers%2FBrdfModelle.pdf%2BBrdfModelle.pdf%26hl%3Den%26gl%3Dus%26ct%3Dclnk%26cd%3D1&langpair=de%7Cen&hl=en&ie=UTF8
It was even useful for twothing! I could look at lots of pretty picutres. :o 19 was my favorite. ;)