Does anyone know this person or the work?

I read that there was a graduate thesis at ENS Louis-Lumiere by
E. Benard in 1998, titled Sulfuration des papiers argentiques en noir
et blanc par les polysulfures: optimisation de la stabilite par une
sulfuration minimale. I am very interested in this work and was about
to request a copy through my institution but I thought to ask if there
is any other publication from the same group that is more readily
accessible.

--
Ryuji Suzuki
"You have to realize that junk is not the problem in and of itself.
Junk is the symptom, not the problem."
(Bob Dylan 1971; source: No Direction Home by Robert Shelton)