ENCODING has been replaced by BIBTEX_INPUT_ENCODING and OUTPUT_ENCODING
@article{GSU13, Author = {S. Gharibian and J. Sikora and S. Upadhyay}, Date-Added = {2014-08-11 09:31:01 +0000}, Date-Modified = {2014-08-11 09:31:48 +0000}, Journal = {Journal of Quantum Information and Computation}, Number = {1-2}, Pages = {135-157}, Title = {QMA variants with polynomially many provers}, Volume = {13}, Year = {2013}}