1. Attardi, G., Cisternino, A., Formica, F., Simi, M. and Tommasi, A. PIQASso: Pisa Question Answering System. Proceedings of Text Retrieval Conference (Trec-10), NIST, Gaithersburg, MD. pp.633–641. USA
2. Ciravegna, F., Dingli, A., Guthrie, D. and Wilks, Y. Mining Web Sites Using Unsupervised Adaptive Information Extraction. Proceedings of the 10th Conference of the European Chapter of the Association for Computational Linguistic, Budapest Hungary.