1. Bulgarian Academy of Sciences, Institute of Philosophy and Sociology, Sofia, Bulgaria
2. Education, Stirling University, Stirling, UK
3. Department for Education and Rehabilitation, Ludwig-Maximilians-University München, Munich, Germany
4. Werklund School of Education, University of Calgary, Calgary, Canada
5. Danish School of Education, Aarhus University, Copenhagen, Denmark
6. Department of Secondary and Further Education, Edge Hill University, Ormskirk, UK
7. Department of Adult Education, University of Botswana, Gaborone, Botswana