Dear Authors, 
 
on last month we received an e-mail from Professor Shen, in his quality of President 
of the International World Wide Web Conference Committee, in order to notify us 
about your compliant regarding our paper "An Adaptive Routing Mechanism for 
Efficient Resource Discovery in Unstructured P2P Networks". 
 
As explained to Professor Shen, in the original draft of our paper we clearly cited your 
work but, unfortunately, the citation was involuntarily eliminated in the camera-ready 
version. 
 
We apologize for the regrettable accident. 
 
In order to explain what happened we will try to sketch a chronological path. 
 
The research activity on this topic has produced incremental works during the course 
of time. 
 
Although in the context of a different application field we adopted the same concept 
presented in your paper,  in order to capture the peer similarity but the citation is 
missing. Nevertheless, an extensive discussion of your contribution was reported in an 
original section "Related Work". 
 
Namely, the section "Related Work" of our initial paper was in the form of the one [1] 
which reports the correct citations, but it was not accepted for publication. As 
previously written, the mistake was made during the editing process of the paper [2]. 
 
Unfortunately, the two papers [3] and [4] were written using this last paper or some 
subsequent version as baselines and this caused a deplorable cascade effect. 
 
Some other papers [5],[6], and [7], that were based on the correct version did report 
the proper citation. 
 
We acknowledge that, albeit involuntarily, our mistake may have caused some 
inconvenient to you. 
In order to promptly correct the mistake we have already arranged for the proper 
errata-corrige to appear together with the complete publication list on our official 
web-site hosted on the department web-server. 
 
http://www.dinfo.unipa.it/en/nrg_publications 
 
We hope you may understand that this mistake was involuntarily caused by the 
inexperience of a young Ph.D student and unfortunately escaped also our internal 
review process.  
 
We hope our explanation may be satisfying for you in order to solve this despicable 
issue, but please feel free to contact us directly for any other action we can do. 
 
Despite this regrettable misunderstanding, we hope that this issue may turn into a 
fruitful collaboration for the future. 
 
Sincerely yours, 
 
Luca Gatani, Giuseppe Lo Re, Salvatore Gaglio 
 
 
List of the papers 
 
1. "Efficient Query Routing in Peer-to-Peer Networks", Proc. of IEEE ITRE'05 
(3rd International Conference on Information Technology: Research and 
Education), June 27Ð30, 2005, Hsinchu, Taiwan, pp. 393-397.  
 
2. "An Adaptive Routing Mechanism for Efficient Resource Discovery in 
Unstructured P2P Networks", In Proceedings of International Conference on 
Computational Science and Its  Applications - ICCSA 2005, Part III, p. 39, 
Lecture Notes in Computer Science 3482. Springer. 
 
3. Reinforcement Learning for P2P Searching, Seventh International Workshop 
on Computer Architecture for Machine Perception (CAMP'05) pp. 303-308 
 
4. An Adaptive Routing Protocol for Ad Hoc Peer-to-Peer Networks, Sixth IEEE 
International Symposium on a World of Wireless Mobile and Multimedia 
Networks (WoWMoM'05) 
 
5. An adaptive routing mechanism for P2P resource discovery Found in: Fifth 
IEEE International Symposium on Cluster Computing and the Grid 
(CCGrid'05) - Volume 1 
 
6.  "An Efficient Adaptive Strategy for Searching in Peer-to-Peer Networks", 
Multiagent and Grid Systems - An International Journal, IOS Press, 
Amsterdam, The Netherlands, vol. 1, no. 3, 2005, pp. 209-224. (ISSN: 1574- 
1702) 
 
7. "A P2P Architecture for Multimedia Content Retrieval", Springer 
Berlin/Heidelberg Lecture Notes in Computer Science (LNCS), Proc. of 
MMM07 (International Multimedia Modeling Conference), January 9Ð12, 
2007, Singapore. (in press)