Q. How do I know which version does the publisher of my article allow me to submit to DR-NTU for archiving and Open Access?
Please check the website, Sherpa Romeo, to ensure that the publisher of your article allows self-archiving of the paper in PDF.
Sherpa Romeo is a site that lists publisher’s information on self-archiving rights.
When in doubt or when information is not available, always submit the accepted version to DR-NTU.