[1] B. International Symposium on Problems of Transition from Technical and Vocational Schools to Work, "The Transition from technical and vocational schools to work: problems, current efforts and innovative approaches and measures for improving transition ," UNESCO, 1983.

International Symposium on Problems of Transition from Technical and Vocational Schools to Work, Berlin, German DR, 1980, "The Transition from technical and vocational schools to work: problems, current efforts and innovative approaches and measures for improving transition ," UNESCO, 1983.

International Symposium on Problems of Transition from Technical and Vocational Schools to Work, B., (1983). "The Transition from technical and vocational schools to work: problems, current efforts and innovative approaches and measures for improving transition," UNESCO.

International Symposium on Problems of Transition from Technical and Vocational Schools to Work, Berlin, German DR, 1980. (1983). "The Transition from technical and vocational schools to work: problems, current efforts and innovative approaches and measures for improving transition," UNESCO.