Two ways to Open Access publication:
Green Open Access
Green Open Access is when you publish in a traditional journal and your scientific article is subsequently made avaible online for free e.g. by being uploaded in the university repository DTU Orbit or another repository as e.g. ArXiv.org.
Golden Open Acccess
Golden Open Access is when you publish your article in an Open Access journal; see Directory of Open Access Journals, DOAJ. Some publishers charge a fee for Open Access publishing. Please check Open access discounts for DTU.
The ways to Open Access publication:
This guide shows the standard procedure for Open Access publication of research articles.