Bulgarian Question Answering for Machine Reading. - Kiril Ivanov Simov; Petya Osenova; Georgi Georgiev; Valentin Zhikov; Laura Tolosi (CLEF (Online Working Notes/Labs/Workshop), 2012)

Cross-Language Answer Validation. - Valentin Zhikov; Laura Tolosi; Petya Osenova; Kiril Ivanov Simov; Georgi Georgiev (CLEF (Online Working Notes/Labs/Workshop), 2012)

Feature-Rich Part-of-speech Tagging for Morphologically Complex Languages: Application to Bulgarian. - Georgi Georgiev; Valentin Zhikov; Kiril Ivanov Simov; Petya Osenova; Preslav Nakov (EACL, 2012)

Towards Knowledge-enriched Cross-Lingual Answer Validation. - Valentin Zhikov; Georgi Georgiev (CLEF (Working Notes), 2013)

A Feature Induction Algorithm with Application to Named Entity Disambiguation. - Laura Tolosi; Valentin Zhikov; Georgi Georgiev; Borislav Popov (RANLP, 2013)

Combining POS Tagging, Dependency Parsing and Coreferential Resolution for Bulgarian. - Valentin Zhikov; Georgi Georgiev; Kiril Ivanov Simov; Petya Osenova (RANLP, 2013)

An Efficient Algorithm for Unsupervised Word Segmentation with Branching Entropy and MDL. - Valentin Zhikov; Hiroya Takamura; Manabu Okumura (Inf. Media Technol., 2013)