This paper was published some time ago but I've only just come across it. It's a good example of qualitative research. Note the use of analysis grounded in the data, purposive sampling, and attention to discrepant findings: all features of rigour in qualitative research. Another feature is the careful naming of themes discovered in the research: the authors here say that 'ownership' is a stronger concept that 'role' to describe what goes on. Lastly the authors set their findings in the context of a social theory from the famous Bourdieu - structuration.