ENCODING has been replaced by BIBTEX_INPUT_ENCODING and OUTPUT_ENCODING
@article{CM14, Author = {E. {Colin de Verdière} and {A. de} Mesmay}, Date-Added = {2014-08-11 12:05:44 +0000}, Date-Modified = {2015-02-23 13:52:33 +0000}, Journal = {Discrete & Computational Geometry}, Number = {1}, Pages = {171-206}, Title = {Testing graph isotopy on surfaces}, Volume = {51}, Year = {2014}}