According to the Budapest Open Access Initiative, an article offers open access if it is freely available to be read, downloaded, copied, distributed, printed or searched. It means the author has retained the copyright but granted a non-exclusive licence for comprehensive (re)use. The latter allows you to make the work accessible online or use it as a resource for lectures. It is therefore important to know how much room a certain copyright leaves for open access publication. More information Budapest Open Access InitiativeOpen Access
Read more