@article{HippGrupp, author = {Hipp, Christiane and Grupp, Hariolf}, title = {Innovation in the service sector: The demand for service-specific innovation measurement concepts and typologies}, language = {en} } @inproceedings{GruppLichtBeiseetal., author = {Grupp, Hariolf and Licht, G. and Beise, M. and Hipp, Christiane}, title = {Individual enterprise matched innovation and patent statistics in Germany: A scoping study of diversification}, language = {en} } @inproceedings{HippGrupp, author = {Hipp, Christiane and Grupp, Hariolf}, title = {Innovation in the service sector: Definition problems and empirical opportunities}, language = {en} }