From Copyright EVIDENCE
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Helmers, C is an author defined within the Copyright Evidence wiki.
This author has contributed to the following studies (1):
|Hall, Helmers, Rogers, and Sena (2014)||Hall, B., Helmers, C., Rogers, M., & Sena, V. (2014). The choice between formal and informal intellectual property: a review. Journal of Economic Literature, 52(2), 375-423.|