DIAS-STP-08-19 Compatible associative products and trees Vladimir Dotsenko This preprint is available on Arxiv.org This preprint is available for download : Portable Document Format (Size: 256K) Postscript (Size: 624K) To obtain copies of any of the preprints in the archives, please contact us and specify the preprint number(s), author(s), title(s) and number of copies wanted.