Paper generation

[Leonardo Giordani]

I want to add paper generation in my watercolors colorspace: Curtis cites

Ken Perlin, An image synthesizer. In SIGGRAPH '85 Proceedings
Steven P. Worley, A cellular texturing basis function. In SIGGRAPH '96 
Proceeding

Does someone own these documents in PDF? Or something about the "paper 
generation" topic?

Thanks
-- 
Leonardo Giordani

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