ENCODING has been replaced by BIBTEX_INPUT_ENCODING and OUTPUT_ENCODING
@article{dhmtw14, Author = {Holger Dell and Thore Husfeldt and D\'aniel Marx and Nina Taslaman and Martin Wahl\'en}, Date-Added = {2015-02-16 16:35:20 +0000}, Date-Modified = {2016-01-31 14:53:01 +0000}, Issue = {4}, Journal = {Transactions on Algorithms}, Number = {21}, Title = {Exponential time complexity of the permanent and the {Tutte} polynomial}, Volume = {10}, Year = {2014}, Bdsk-Url-1 = {http://dx.doi.org/10.1145/2635812}}