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! Unpublished:
! [A1] J. Poppe
! [A2] P.Fuentealba, Dissertation (1984)
! [A3] P. Fuentealba (1988)
! [A4] G. Igel-Mann (1988)
! [A5] G. Igel-Mann, Doktorarbeit (1987)
! [A6] U. Haeussermann, Arbeitsbericht (1988)
! [A7] Dirk Andrae, Diplomarbeit (1989)
! [A8] W. Kuechle, Diplomarbeit (1993)
! [A9] A.Bergner, Arbeitsbericht (1990)
! [A10] M. Dolg, Dresden, (1997)
! [A11] P. Schwerdtfeger and R. Wesendrup, (1999)
! [A12] Xiaoyan Cao, Michael Dolg, Uni. Bonn (2002)