@inbook{BBC+03,
 author = {Baeza-Yates, Ricardo and Bustos, Benjamin and Chávez, Enrico and Herrera, N. and Navarro, Gonzalo},
 booktitle = {in W. Wu, H. Xiong, and S. Shekhar (editors), Clustering and Information Retrieval},
 pages = {1-34},
 publisher = {Kluwer Academic Publishers},
 title = {Clustering in Metric Spaces and Its Application to Information Retrieval},
 year = {2003}
}