Hi Mirko, thanks for updating the links here. I just thought I'd let you know that two major sites still have links pointing to the "polywarmton" site which no longer redirects. They are:
(The site which shows print examples) http://www.moersch-photochemie.de/content/galerie/forte
(The original product description for the paper) http://www.adox.de/english/ADOX_Pape...lywarmton.html
Both of those are listed on your www.polywarmtone.com site. Hope this helps and best of luck with the paper!