Site seems a bit unreliable to me, timing out, so here's the original research PDFs that the article is based on http://www.csc.kth.se/~gkreitz/spotify-p2p10/

Site seems a bit unreliable to me, timing out, so here's the original research PDFs that the article is based on http://www.csc.kth.se/~gkreitz/spotify-p2p10/ http://www.csc.kth.se/~gkreitz/spotify-p2p10/