Journal articles on this website are made available in the PDF (portable document format) files. These files contain complex documents with graphs, images, and special text that cannot be presented easily through the typical Web browser.
While some operating systems ship with a PDF reader and/or PDF web browser plugin for others you may have to download a freely available Adobe® Reader® from Adobe® Systems:
Many of the freely available PDF readers have extensive accessibility features. For Adobe® Reader® you can find more information at the Adobe Reader Accessibility webpage.