Pettifer S, McDermott P, Marsh J. et al. Ceci n'est pas un hamburger: modelling and representing the scholarly article. Learned Publishing 2011;24(3):207-220
In spite of its apparent limitations, the PDF remains the favourite vehicle for distributing scholarly work, representing more than 80% of all downloaded content. The article introduces the Utopia Documents, a new free PDF reader that the authors have developed. This software combines all the advantages of the PDF with the interactivity of a blog or Web pages. It reads a PDF much like a human does, recognizing document content and feature and ignoring less important artefacts and non-document content.