Convert anisotropic to isotropic thermal displacement

[Ian.Madsen]

Hi All,
 
I am looking for a small program to allow me to convert anisotropic
thermal parameters to an equivalent isotropic value. 
 
Can anyone send me such a program (or at least point me to the location
of one).
 
  
Cheers
 
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     Ian Madsen
     Team Leader - Diffraction Science
     CSIRO Minerals
     Box 312
     Clayton South 3169
     Victoria
     AUSTRALIA
     Phone +61 3 9545 8785 direct
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                 +61 (0) 417 554 935 mobile
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     Email [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>  
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