00662nam 2200193z- 450 99632083060331620160818152920.0(CKB)9870000000000614(EXLCZ)99987000000000061420131117c2013uuuu -u- -engDo trademarks diminish the substitutability of products in innovative knowledge-intensive services?MannheimZEWSchwiebacherFranz1015988CrassDirk1018617BOOK996320830603316Do trademarks diminish the substitutability of products in innovative knowledge-intensive services2396585UNISA