Cozmuta, I.; van der Graaf, E. R.; de Meijer, R. J.
*Nuclear Geophysics Division, Kernfysisch Versneller Instituut (KVI), Zernikelaan 25, 9747 AA Groningen, The Netherlands.
Manuscript received 18 January 2003;
revised manuscript received 10 March 2003; accepted 30 May 2003
For correspondence or reprints contact: E. R. van der Graaf, KVI-University of Groningen, Zernikelaan 25, Nuclear Geophysics Division 9747AA, Groningen, The Netherlands, or email at [email protected]
