# LitSource

> LitSource (litsource.net) is a reverse literature search and citation verification platform for biomedical research. Paste a sentence or claim to find real supporting papers in PubMed, CrossRef, OpenAlex and Semantic Scholar in seconds, or paste a reference list to verify every citation is real (correct DOI, PMID, title, authors, journal, year) and detect AI-hallucinated or fake citations.

Key facts:
- Reverse literature search: from a sentence/claim to real, verifiable sources with highlighted supporting snippets.
- Citation authenticity check: detects fake, AI-fabricated (ChatGPT-hallucinated) or mismatched references before submission.
- Coverage: PubMed, PubMed Central, CrossRef, OpenAlex, Semantic Scholar, arXiv, Europe PMC.
- Every result links to its PubMed/DOI record; no LLM-generated citations.
- Free tier available; browser extension for checking citations while writing.
- Interface languages: English, 中文, 日本語, 한국어, Deutsch, Español, Français and more.

## Core tools
- [Reverse Literature Search](https://litsource.net/reverse-literature-search): find real papers that support a sentence or claim.
- [Citation Checker](https://litsource.net/citation-checker): verify a reference list against authoritative databases.
- [AI Citation Checker](https://litsource.net/ai-citation-checker): screen AI-generated references for hallucinations.
- [Fake Citation Checker](https://litsource.net/fake-citation-checker): detect fabricated or mismatched citations.
- [DOI Checker](https://litsource.net/doi-checker): validate DOIs and resolve them to real papers.
- [Verify Citation Authenticity](https://litsource.net/verify-citation-authenticity): full authenticity report for each reference.
- [PubMed Citation Checker](https://litsource.net/pubmed-citation-checker): check citations against PubMed records.
- [Find Sources for a Claim](https://litsource.net/find-sources-for-a-claim): claim-to-evidence source finding.
- [PubMed Query Generator](https://litsource.net/pubmed-query-generator): build precise PubMed search queries.
- [PICO PubMed Query Generator](https://litsource.net/pico-pubmed-query-generator): PICO-structured clinical queries.

## Guides
- [AI Citation Checker Guide](https://litsource.net/ai-citation-checker-guide)
- [Reference Checking Checklist](https://litsource.net/reference-checking-checklist)
- [Fake Citation Examples](https://litsource.net/fake-citation-examples)
- [LitSense vs LitSource Comparison](https://litsource.net/litsource-vs-litsense)
- [LitSource vs Citely Comparison](https://litsource.net/vs/citely)
- [LitSource vs Sourcely Comparison](https://litsource.net/vs/sourcely)
- [How to Verify if a Paper is Real](https://litsource.net/verify-if-a-paper-is-real)
- [Fake Citations Topic Hub](https://litsource.net/topics/fake-citations)
- [Reverse Literature Search Topic Hub](https://litsource.net/topics/reverse-literature-search)
- [DOI Verification Topic Hub](https://litsource.net/topics/doi-verification)

## About
- [Home](https://litsource.net/)
- [Pricing](https://litsource.net/pricing)
- [Blog](https://litsource.net/blog)
- [Docs & Database Coverage](https://litsource.net/docs/coverage)
- [Browser Plugin](https://litsource.net/plugin)