Sarah Goler, James T. Yardley, Angela Cacciola, Alexis Hagadorn, David Ratzan and Roger Bagnall. "Characterizing the age of ancient Egyptian manuscripts through micro-Raman spectroscopy." Journal of Raman Spectroscopy. Article first published online: 6 MAY 2016 DOI: 10.1002/jrs.4945.You can read the abstract at the link. The full article is here, but probably requires a paid subscription to access.
And now (apparently) in paper vol. 47 issue 10, October, 2016, pages 1185–1193, ISSN 1097-4555
Background (with reference to the Gospel of Jesus' Wife) is here and links.