No matter the paper is single authored or multi-authored, if you would like to have the paper published in the proceedings, you need to pay registration fee US$450 for each paper before June 30, 2011. The registration fee is US$500 after June 30, 2011. 

However, in case that the paper is multi-authored and more than one author would like to participate in the conference, each participant needs to pay the registration fee.  

Every registered participant will get one set of conference package, which covers all conference sessions, two lunches, coffee breaks, and a copy of conference proceedings in CD-ROM format.