Wolf, P., J. O. Meissner, T. Nolan, M. Lemon, R. John, E. Baralou, and S. Seemann. “Methods for Qualitative Management Research in the Context of Social Systems Thinking”. Forum Qualitative Sozialforschung / Forum: Qualitative Social Research, vol. 11, no. 3, Sept. 2010, doi:10.17169/fqs-11.3.1548.