You have installed a bibliography manager software like Jabref, but now you want to have access to your papers on the go on your tablet ? Just follow this simple instructions:
1/Save your database file and yours pdf files in a folder on your computer.
2/Make a symbolic link to this folder from your dropbox folder. With this you can access your pdf through dropbox.
3/Install a BibTeX app on your ipad, like PocketBib. Now you can read your database and your pdfs and even anotate your pdf.
PocketBib is $10, but it works very well. For me, it was worth the price.