Click "PDF" on the right side and you get https://arxiv.org/pdf/1602.04504v1.pdf

There's a little-known way to solve that problem for any paper: post the link to /r/scholar, and you'll get the full pdf within a couple hours.

Sci-hub doesn't have it?

That's a link to arXiv which the biggest publicly available preprint server. That means you can get it for free legally.