1. Blandford, A., Adams, A., Attfield, S., Buchanan, G., Gow, J., Makri, S., Rimmer, J., Warwick, C.: PRET a rapporter: evaluating digital libraries alone and in context. Inf. Process. Manag. 44, 4–21 (2008)
2. Blandford, A.: Semi-structured qualitative studies. In: Soegaard, M., Dam, R.F. (eds.) The Encyclopedia of Human-Computer Interaction, 2nd edn. The Interaction Design Foundation, Aarhus, Denmark. https://www.interactiondesign.org/encyclopedia/semistructured_qualitative_studies.html (2014)
3. Borgatti, S.P.: Introduction to grounded theory. http://www.analytictech.com/mb870/introtoGT.htm . Accessed 2 Jan 2015 from the Stephen P. Borgatti Website (1996)
4. Carlsson, M.: Conceptual and Empirical Aspects of TQM Implementation in Engineering Organizations, The “R&D Management” Conference, Quality and R&D, Twente Quality Center, 6–8 March, Enschede, The Netherlands, pp. 84–99 (1996)
5. Charmaz, K.: Grounded theory. In: Smith, J.A. (ed.) Qualitative Psychology: A Practical Guide to Research Methods. Sage (2008)