HELP: beta-strand (sheet) prediction!!

[quido]

Hello,

I'm looking for a program which can predict beta-strands and/or beta-sheets
from primary structures. 
Preferentially a program that has been used by auteurs before (reference
would be nice)
If you know how I can get such a program, please contact me as soon as
possible. 
Thanks for the effort!


-- 
Q. Valent, Free University of Amsterdam, Boelelaan 1087, 1081 HV,
Amsterdam, The Netherlands.
Fax: +3120-6429202, E-mail: quido at bio.vu.nl or valent at bio.vu.nl