1. Jones, A., Willis, M.: The challenge of XBRL: business reporting for the investor. Balance Sheet 11, 29–37 (2003)
2. Watson, R.T., Webster, J.: Analyzing the past to prepare for the future: Writing a literature review. MIS Quarterly 26, xiii–xxiii (2002)
3. Vom Brocke, J., Simons, A., Niehaves, B., Riemer, K., Plattfaut, R., Cleven, A.: Reconstructing the giant: on the importance of rigour in documenting the literature search process. In: Proceedings 17th European Conference on Information Systems, Verona (2009)
4. Strauss, A.L., Corbin, J.M.: Basics of qualitative research: grounded theory procedures and techniques. Sage Publications, Thousand Oaks (1990)
5. Kelle, U.: Emergence vs. Forcing of Empirical Data? A Crucial Problem of Grounded Theory Reconsidered. Forum Qualitative Sozialforschung 6 (2005)