auxin and cytokinin root inhibition

[Robert R. Klepper]

To all:
I am in need of literature rferences to the possible 
role of both auxins and cytokinins in inhibition of 
root elongation.  We have already demonstrated 
this role, but are interested in references from the 
literature.  Anyone with knowledge or even experimnental 
results to share I would appreciate it.   
Thanks.

Dr. Robert R. Klepper
Internet: 72262.2070 at compuserve.com
Compuserve: 72262,2070