Reference Importer: search for an article/book from a variety of sources and import the corresponding reference data (BibTex, PDF) into BibDesk, copy BibTeX to clipboard, go to the landing page for the article, or copy a formatted reference. Also supports reference lookup from a PDF file. (This workflow was formerly known as "Citation Search" and "AIAA Search")
(follow link to GitHub for a more detailed README and download)
Update 5/22/2013: added conversion of non-latin characters to proper LaTeX. also removed default cite-key so that BibDesk can populate citekey with user defined st