Tác giả: Kristina Mann

Prof. Frank Schulz-Nieswandt, Chair of Social Policy and Methods in Qualitative Social Research, Director of the Seminar on the Cooperative System at the Institute of Sociology and Social Psychology, First Vice-Dean of the Faculty of Economics and Social Sciences at the University of Cologne, Honorary Professor at PTHV Vallendar; Dr. Ursula Köstler, former research assistant at the Chair of Social Policy and Methodology in Qualitative Social Research at the Institute of Sociology and Social Psychology; Dr. Kristina Mann, research assistant at the Chair of Social Policy and Methodology in Qualitative Social Research at the Institute of Sociology and Social Psychology.