I just came across the following question: Kaczorowski's paper on Distribution of Primes
In case the question gets deleted or closed in the future, the OP asks for a specific reference, which is behind a paywall. Presumably he does not have access to a library or other resource which has a subscription.
I feel like this is a somewhat contentious issue. Indeed, there is now a movement among some scientists that are rallying against the existence of paywalls. For example, the University of California system recently dropped their subscription to Elsevier journals: https://www.vox.com/science-and-health/2019/3/1/18245235/university-of-california-elsevier-subscription-open-access. Long before that, Tim Gowers and several others started an initiative specifically targeting Elsevier, rallying mathematicians to sign a declaration that they will not submit papers to Elsevier journals nor do any service (editor/refereeing) for them.
Opinions aside, what is the MO stance on assisting people get papers that appear to only exist behind a paywall?