DOAI (Digital Open Access Identifier) is an alternate DOI (Digital Object Identifier) resolver that takes you to a free version of the requested article, when available.
To use it, replace dx.doi.org by doai.io in any DOI link.
Examples
- http://doai.io/10.1016/j.jalgebra.2015.09.023 vs
http://dx.doi.org/10.1016/j.jalgebra.2015.09.023 - http://doai.io/10.1139/f92-220 vs
http://dx.doi.org/10.1139/f92-220
Who runs this
DOAI is run by CAPSH, and relies on the metadata provided by our partners, most notably the Bielefeld Academic Search Engine (BASE).