Stefan Hetzl. The Computational Content of Arithmetical Proofs. Notre Dame Journal of Formal Logic, 53(3):289-296, 2012. [doi]
@article{Hetzl12, title = {The Computational Content of Arithmetical Proofs}, author = {Stefan Hetzl}, year = {2012}, url = {http://projecteuclid.org/euclid.ndjfl/1348524113}, researchr = {https://researchr.org/publication/Hetzl12}, cites = {0}, citedby = {0}, journal = {Notre Dame Journal of Formal Logic}, volume = {53}, number = {3}, pages = {289-296}, }