For import: bibtex of course, as most bibliography managers can import/export bibtex, maybe also orcid, as it is becoming the standard "unique id" service for academia.
Also, you should consider allowing users to just input a DOI and fetch all the metadata yourself from BASE or CrossRef. With the DOI, using a service like https://oadoi.org/ or http://doai.io/ (they may merge to unite dev force in a not so distant future, but both domains will still work) would also allow to link directly to an accessible PDF of the publication.
I don't think supporting ResearchGate or services like that (academia.edu etc) directly would be a good thing. For interoperability, they should allow bibtex export. If they don't, why encourage them to continue locking-in their users?
Comments
For import: bibtex of course, as most bibliography managers can import/export bibtex, maybe also orcid, as it is becoming the standard "unique id" service for academia.
Also, you should consider allowing users to just input a DOI and fetch all the metadata yourself from BASE or CrossRef. With the DOI, using a service like https://oadoi.org/ or http://doai.io/ (they may merge to unite dev force in a not so distant future, but both domains will still work) would also allow to link directly to an accessible PDF of the publication.
I don't think supporting ResearchGate or services like that (academia.edu etc) directly would be a good thing. For interoperability, they should allow bibtex export. If they don't, why encourage them to continue locking-in their users?