Kruse H, O’Hallarn B, McKnight JC, Tekkobe C, Shepherd T, Shtern J. ECONOMIES OF THE INTERNET III: SPHERES. SPIR [Internet]. 2015 Oct. 31 [cited 2024 Nov. 23];5. Available from: https://spir.aoir.org/ojs/index.php/spir/article/view/8568