@article{article, title = {{The Choice between Formal and Informal Intellectual Property: A Review}}, publisher = {{American Economic Association}}, url = {{}}, year = {{2014}}, month = {{6}}, author = {{Hall B and Helmers C and Rogers M and Sena V}}, doi = {{10.1257/jel.52.2.375}}, volume = {{52}}, journal = {{Journal of Economic Literature}}, issue = {{2}}, pages = {{375-423}}, note = {{Accessed on 2024/12/22}}}