Why are some journals or volumes free on ScienceDirect?
Some of ScienceDirects content is freely accessible to all users. For a clarification on the content types and characteristics please review the table below. The free content is displayed with the green icon indicating Full-Text availability, If you are a subscribing institution and would like to have an overview of your subscribed journals and the free journals please run the ScienceDirect Electronic Holdings Report. In this report the permanently free content is illustrated with a yellow icon. To run the Electronic Holdings Report please go to www.sciencedirect.com/science/account. ModelExplanation Sponsored Articles or IssuesA 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 AccessScienceDirect’s open access model makes certain content available to all ScienceDirect use