The following article is a good overview of Shroud research and the controversy over authenticity and Carbon 14 dating. Written by Emanuella Marinelli from Collegamento Pro Sindone
http://www.shroud.it/STUDIES.HTM

Here is a summary of the conclusions found by the Shroud of Turin Research Project (STURP) in 1981.
http://www.shroud.com/78conclu.htm

An excellent and up to date summary can be found in this well balanced encyclopedia article filled with links for more information. http://en.wikipedia.org/wiki/Shroud_of_Turin

This article is written by Dr. John and Rebecca Jackson. John is a pioneer in Shroud physics and Rebecca whose contributions are in the area of Jewish studies. Here you will find info regarding image formation and how the 1532 fire may have altered the carbon date.
http://www.shroudofturin.com/Science1.html