adding collaborative citation systems and document markup reference from normen's diss
adding collaborative citation systems and document markup reference from normen's diss

git-svn-id: cf47ee4d6e92cb36b45e66c62b700e0eeb53b55c@15179 dbb300ad-cee0-0310-926a-aaf367d45816

KWARC/bibs,KWARC/bibs