[Help-gsl] Setting a multidimensional minimisation domain

[Daniel]

Hello,

I have successfully used the multidimensional minimisation     
functions to find the minimum of a 3 variable space. Only certain  
choices of guess values find the minimum (this doesn't surprise me).  
In order to make the iteration scheme more stable, is it possible to  
set-up a domain over which each variable can range?

Cheers,

Dan