Sandra Kübler, Desislava Zhekova. Singletons and Coreference Resolution Evaluation. In Galia Angelova, Kalina Bontcheva, Ruslan Mitkov, Nicolas Nicolov, editors, Recent Advances in Natural Language Processing, RANLP 2011, 12-14 September, 2011, Hissar, Bulgaria. pages 261-267, RANLP 2011 Organising Committee, 2011. [doi]