GREEN in Sherpa; author can archive pre-print, post-print and can archive publisher's version/PDF with conditions: 

•Author's pre-print on preprint server
•Author's pre-print must be updated with citation, DOI and link to article upon publication
•Publisher's version/PDF may be used after 6 months•Publisher's version/PDF and Author's post-print on author's personal website, institutional repository, funder's designated repository
•Authors retain copyright
•Content automatically sent to PubMed Central after 6 months
•Publisher copyright and source must be acknowledged. 
19/11/13 HD.