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Preprints, open-access journals, literature search and institutional repositories — doors to real papers that cost nothing.

9 sites

MIT 机构库

MIT's papers and theses

Repositories & books repositoryUS Details

dash.harvard.edu

Harvard DASH

Harvard's open-access repository

Repositories & books repositoryUS Details

scholar.google.com

Google Scholar

The widest-reaching academic search

Repositories & books searchcitations Details

v2.sherpa.ac.uk

OpenDOAR 机构库名录

A worldwide directory of institutional repositories

Repositories & books repositoriesdirectory Details

OAPEN

A library of open-access scholarly books

Repositories & books monographsEurope Details

Zenodo

Papers, data and code in one place

Repositories & books datarepository Details

ideas.repec.org

RePEc / IDEAS

The master index of economics literature

Repositories & books economicsindex Details

美国国家经济研究局

A publishing platform for economic policy research

Repositories & books economicsthink tank Details

JSTOR Open

The free portion of JSTOR

Repositories & books humanitiesjournals Details