* *the power of gifts: organizing social relationships in open source communities* (information systems journal) by Berquist, Ljungberg)
* *evidences in the evolution of OS projects through changelog analyses* by Capiluppi, Lago, Morisio
* *[NixOS: a purely functional Linux Distribution](http://people.cs.uu.nl/andres/NixOS.html)* by Dolstra, Löh
+* *[clustering and dependencies in free/open source software development: methodology and tools](dxm.org/papers/toulouse2/cluster-final.pdf)* by Ghosh
### printed