There’s been a lot of turbulence in the SD society web organization, which is greatly improved. One side effect is that conference proceedings have moved. The conference proceedings page now points to a dedicated subdomain.
If you want to do a dedicated search of the proceedings for papers on a particular topic, the google search syntax is now:
where ‘topic’ should be replaced by your terms of interest, as in
(This post was originally published in Oct. 2012; obsolete approaches have been removed for simplicity.)