As long as he's publishing under a CC license, it might be nice to release the LaTeX source as well. PDF is usually good enough, but sometimes needs to be conv

As long as he's publishing under a CC license, it might be nice to release the LaTeX source as well. PDF is usually good enough, but sometimes needs to be converted to other formats; you usually get best results going latex->epub than pdf->epub. Some devices it's a lot easier to be able to change attributes to better fit the form factor.