Do trademarks diminish the substitutability of products in innovative knowledge-intensive services?

MLA

Crass,Dirk, and Schwiebacher,Franz Schwiebacher,Franz. Do Trademarks Diminish the Substitutability of Products In Innovative Knowledge-intensive Services?. Mannheim: ZEW, 2013.

APA

Crass,Dirk, C., & Schwiebacher,Franz, S. (2013). Do trademarks diminish the substitutability of products in innovative knowledge-intensive services?. Mannheim: ZEW.

Chicago

Crass,Dirk, and Schwiebacher,Franz Schwiebacher,Franz. Do Trademarks Diminish the Substitutability of Products In Innovative Knowledge-Intensive Services?. Mannheim: ZEW, 2013.