The call for papers is open for the Hackers to Hackers Conference being held in November, 2008. It will take place in Sao Paulo, Brazil.
You can download it from the following link: https://packetstormsecurity.com/files/download/69325/H2HC-CFP-2008.txt
Source: https://packetstormsecurity.com/files/69325/H2HC-CFP-2008.txt.html