Self Rotation Function Interpretation

[R. Bryan Sutton]

Does anyone know of a good tutorial or book chapter, etc. explaining 
interpretation of self rotation functions?  Most crystallographic texts 
explain about cross rotation functions, but self maps seem to be treated 
as forgotten step children..
Thanks for any help..


Bryan Sutton
email: sutton at hoiwe.swmed.edu
Univerisity of Texas Southwestern Medical Center
Dallas, TX