1.

Conference Proceedings
Conference Proceedings
1. Investigations of Goethite,Haematite and Magnetite
Uhlmann,K. ; Britton,D.T. ; Heger,S.
Pub. info.: Positron annihilation : ICPA-10 : Proceedings of the 10th International Conference on Positron Annihilation, May 23-29, 1994, Beijing, China.  Part1  pp.225-228,  1995.  Aederlmannsdorf, Switzerland.  Trans Tech Publications
Title of ser.: Materials science forum
Ser. no.: 175-178
2.

Conference Proceedings
Conference Proceedings
2. Defects in Natural Coloured Quartz
Britton,D.T. ; Heger,S. ; Trifishauser,W.
Pub. info.: Positron annihilation : ICPA-10 : Proceedings of the 10th International Conference on Positron Annihilation, May 23-29, 1994, Beijing, China.  Part1  pp.307-310,  1995.  Aederlmannsdorf, Switzerland.  Trans Tech Publications
Title of ser.: Materials science forum
Ser. no.: 175-178