Kruse, Holly, Brendan O’Hallarn, John Carter McKnight, Cindy Tekkobe, Tamara Shepherd, and Jeremy Shtern. 2015. “ECONOMIES OF THE INTERNET III: SPHERES”. AoIR Selected Papers of Internet Research 5 (October). https://spir.aoir.org/ojs/index.php/spir/article/view/8568.