ENCODING has been replaced by BIBTEX_INPUT_ENCODING and OUTPUT_ENCODING
@incollection{2015GuionSchabanel1024, Author = {Laure Guion and Nicolas Schabanel}, Booktitle = {1024 -- Bulletin de la société informatique de France}, Date-Added = {2016-01-31 14:41:57 +0000}, Date-Modified = {2016-01-31 14:43:00 +0000}, Journal = {1024}, Month = {February}, Pages = {19-21}, Publisher = {Société Informatique de France}, Title = {La médiation en informatique vue par le CNRS}, Year = {2015}}