@InCollection{CDDDRR06, author = {Simona Colucci and Tommaso {Di Noia} and Eugenio {Di Sciascio} and Francesco M. Donini and Azzurra Ragone and Raffaele Rizzi}, title = "Explanation Services and Request Refinement in
User Friendly Semantic-enabled B2C E-Marketplaces", booktitle = "Data Engineering Issues in E-Commerce and Services
(DEECS 2006)", series = "Lecture Notes in Computer Science", volume = "4055", pages = "13--27", year = "2006", publisher = "Springer", url = "http://sisinflab.poliba.it/sisinflab/publications/
2006/CDDDRR06" }