ENCODING has been replaced by BIBTEX_INPUT_ENCODING and OUTPUT_ENCODING
@article{PKLSZDK, Author = {A. Pappa and N. Kumar and T. Lawson and M. Santha and S. Zhang and E. Diamanti and I. Kerenidis}, Date-Added = {2016-02-01 19:50:08 +0000}, Date-Modified = {2016-02-01 19:50:08 +0000}, Journal = {Physical Review Letters}, Number = {2}, Pages = {020401}, Title = {Nonlocality and conflicting interest games}, Volume = {112}, Year = {2015}}