••• Check out Bookends - PubMed On Taps big brother ••• PubMed On Tap searches PubMed and PubMed Central to find, display, and import reference information and PDFs of the full article (requires access privileges). You can search your personal reference library, organize your references in groups (static and smart), and email references from your device to yourself or others in a form suitable for reading or importing into other reference management apps. Many features are optimized for reference retrieval and management (advanced boolean searches, search for Full Text or Free Full text, recall recent searches, etc.).