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Explanation
Sponsored Articles or Issues
A number of journals offer this option. After an article has been accepted for publication, authors, funding bodies, or companies can sponsor individual articles or issues and to be made available to all subscribers and non-subscribers via ScienceDirect.
Delayed Open Access
ScienceDirect's open access model makes certain content available to all ScienceDirect users after a specific period of time. For example content can be made available 12 or 24 months, or any specified time prior to current date. The amount of backfiles made available may also be specified but commonly as far back as 1995 is accessible to all
Promotional
Journal that were added outside of the renewal period and can no longer be subscribed are made free for all ScienceDirect users. Content is freely accessible for up to a
Free Journals
A few journals are not peer-reviewed and the revenue is earned through advertising or sponsorship. Such journals are permanently made accessible to all Sci
Sample Issue
Most journals will have the first issue of the latest year as a sample issue, this is designed to give the reader an idea of the journals content.
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