@article{acs2009,
 author = {Carpineto, Claudio and Osi\'{n}ski, Stanislaw and Romano, Giovanni and Weiss, Dawid},
 title = {A survey of Web clustering engines},
 journal = {ACM Computing Surveys},
 volume = {41},
 number = {3},
 year = {2009},
 issn = {0360-0300},
 pages = {1--38},
 doi = {http://doi.acm.org/10.1145/1541880.1541884},
 publisher = {ACM},
 address = {New York, NY, USA},
}