imageTristan Casabianca writes in a comment:

Another hypothesis about the image formation process has just been published in a peer-reviewed journal : Forensic Science, Medicine and Pathology : Tattoli, Tsokos, Buschmann, “Could the Shroud of Turin be an effect of post-mortem changes?”

You can have a free access to the first two pages.
(parental discretion advised)

imageYou will probably need to click on the “Look Inside” button from within the publications website to see the first two pages.