I don't think it's either of those: the article mentions Mark Wagner and Liqun Luo, who aren't authors. I think I found it above, via the 2nd link in the artic

I don't think it's either of those: the article mentions Mark Wagner and Liqun Luo, who aren't authors. I think I found it above, via the 2nd link in the article; it goes to a PR piece which ultimately links to the paper.