@article{MelucciH06,
 author = {Massimo Melucci and David Hawking},
 title = {A Perspective on Web Information Retrieval (Introduction to the 
          Web IR Special Issue)},
 journal = {Information Retrieval},
 year = {2006},
volume = 9,
number = 2,
pages = {207--225},
 note = {\url{http://es.csiro.au/pubs/melucci_hawking.pdf}}
}