Pro tip for web users:

Lots of people post links here, that might be behind a paywall.

If you use Firefox or Chrome, as a web browser, here is a great add on extension that gets you past those pesky paywalls.

https://github.com/iamadamdev/bypass-paywalls-chrome

Also for Science Papers use Sci-Hub. Just copy and past the "DOI" here:

https://sci-hub.se