%0 Journal Article
%1 berkovich2012requirements
%A Berkovich, Marina
%A Leimeister, Jan Marco
%A Hoffmann, Axel
%A Krcmar, Helmut
%D 2012
%E London, Springer
%J Requirements Engineering
%K itegpub pub_aho pub_jml
%P 1-26
%T A requirements data model for product service systems
%U http://pubs.wi-kassel.de/wp-content/uploads/2013/03/JML_377.pdf