jstor is a digital library of academic journals, books, and primary sources.

fast. accurate. easy to use. stata is a complete, integrated statistical software package for statistics, visualization, data manipulation, and reporting.

prb works to fuel evidence-based decisions and policies involving population, health, and the environment.

gesis - leibniz-institut für sozialwissenschaften bietet forschenden datensätze, beratungsleistungen und infrastrukturangebote auf dem gebiet der empirischen sozialforschung

in a complex, changing, and increasingly contested world, the carnegie endowment generates strategic ideas and independent analysis, supports diplomacy, and trains the next generation of international scholar-practitioners to help countries and institutions take on the most difficult global problems and safeguard peace.

rand is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. rand focuses on the issues that matter most such as health, education, national security, international affairs, the environment, and more. with a research staff consisting of some of the world's preeminent minds, rand has been expanding the boundaries of human knowledge for more than 75 years.

access 160+ million publications and connect with 25+ million researchers. join for free and gain visibility by uploading your research.

an online latex editor that’s easy to use. no installation, real-time collaboration, version control, hundreds of latex templates, and more.

search and explore the millions of quality, peer-reviewed journal articles published under the taylor & francis and routledge imprints.

purdue university is a world-renowned, public research university that advances discoveries in science, technology, engineering and math.