docbook-xsl-stylesheets from DISCONTINUED:openSUSE:11.1 project
Select Your Operating System
Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/DISCONTINUED:openSUSE:11.1/standard/DISCONTINUED:openSUSE:11.1.repo zypper refresh zypper install docbook-xsl-stylesheets