Conference paper title
When Zotero picks up a conference paper citation from a COinS (genre=proceeding), it interprets it as a 'book section' although it captions it as a conference paper. Thus it is showing the title as being the book title (btitle), ie the proceedings title, and ignoring the paper title (atitle). A conference paper citation would be more useful if it showed both the paper title and the proceedings title.
http://forums.zotero.org/discussion/439/