how to use supercite

[Uwe Brauer]

Hello

Recently I started to use supercite within VM, using the following
setting

(require 'supercite)
(add-hook 'mail-citation-hook 'sc-cite-original)
(setq sc-nested-citation-p nil)
(setq sc-citation-delimiter ">")
(setq sc-attrib-or-cite t)

Now the documentation via info tells me to use for gnus

;; gnus stuff    
(add-hook 'news-reply-mode-hook 'sc-perform-overloads)
(add-hook 'mail-setup-hook 'sc-perform-overloads)
but this function sc-perform-overloads is not longer defined.
So I tried
(add-hook 'news-reply-mode-hook 'sc-cite-original)

With no success neither, anybody has an idea, thanks

Uwe Brauer