Scott Aaronson. The Busy Beaver Frontier. SIGACT News, 51(3):32-54, 2020. [doi]
@article{Aaronson20-0, title = {The Busy Beaver Frontier}, author = {Scott Aaronson}, year = {2020}, doi = {10.1145/3427361.3427369}, url = {https://doi.org/10.1145/3427361.3427369}, researchr = {https://researchr.org/publication/Aaronson20-0}, cites = {0}, citedby = {0}, journal = {SIGACT News}, volume = {51}, number = {3}, pages = {32-54}, }