APIs for bibliometric information

This is a list of APIs that provide bibliometric information.

API	Microsoft	CrossRef	Elsevier	ArXiv	Europe PMC	IEEExplore	Semantic Scholar API	Mendeley	Springer	Google Scholar API
Website	URL	URL	URL	URL	URL	URL	URL	URL	URL	URL
Register	URL	URL	URL	URL	URL	URL	URL	URL	URL	URL
Documentation	URL	URL	URL	URL	URL	URL	URL	URL	URL	URL
Free	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌
DOI	❌	✅	✅	✅	✅	✅	✅	✅	✅	❓
#Citations	✅	✅	✅	❌	✅	✅	✅	❌	❌	❓
Citation IDs	❌	✅	✅	❌	❌	❌	✅	❌	❌	❓
#References	❌	✅	❌	❌	❌	❌	✅	❌	❌	❓
Reference IDs	❌	✅	❌	❌	❌	❌	✅	❌	❌	❓
Journal Indicators	❓	✅	✅	❌	❌	❌	✅	❌	✅	❓
Data Format	JSON	JSON	JSON	XML	XML, JSON, DC	XML, JSON	HTML	JSON	XML, JSON	XML, JSON
Limitations	Not many papers			Only ArXiv papers	Not much info	Not much info		Not much info	Not much info	Not free

Examples

Microsoft academic

Get paper information:

https://api.labs.cognitive.microsoft.com/academic/v1.0/evaluate?expr=And(Composite(AA.AuN=='{}'),Y=[{},{}],Ti='{}',Ty='{}')&model=latest&count=10&offset=0&attributes=Id,Ty,Ti,Y,CC,CitCon,ECC,AA.AfId,AA.AfN,AA.AuId,AA.AuN,AA.DAuN,AA.DAfN,AA.S,AW,BT,C.CId,C.CN,D,DN,DOI,F.DFN,F.FId,F.FN,FamId,FP,I,J.JId,J.JN,LP,PB,Pt,RId,S,Ti,V,VFN,VSN,W,Y