Reviving an old thread just to post an archived copy of the document alf5071h had above
TP 14002E Wet Runway Friction: Literature and Information Review. That link is dead. The document is not longer available on the Transport Canada as a direct download link, only by email request.
However it was archived at the wayback machine:
Wet Runway Friction: Literature and Information Review Prepared for Transportation Development Centre On behalf of Aerodrome Safety Branch Transport Canada August 2001