Bia Martins is one of the students of the Peer Production class that was held in Rio de Janeiro in November 2012, for ECO-URCA, the School of Communications of the Rio de Janeiro Federal University. She is also a journalist specialized in internet reporting.
Bia’s Doctorate Thesis, in Portuguese, dealt with “Authorship through network – A study of the interactive authoring processes of writing in communication networks.”
The following is a very readable English version of the findings and contains an interesting summary of the history of authorship:
Wikipedia and the reinvention of authorship through digital media