Wikibooks are community collaborated books. All registered users can contribute to the books. The wikibooks are ideal place to document reference materials and tutorials. It is textbooks built by the community members and free to anyone to use.
Article is a special post type at emfocal.com. It is intended to be used for online publication of stand alone finish writtings, such as research works. The format is preferred to be pdf or html format. Follow the menu item "Articles" to submit.
