@article{lmcs:4255, title = {The Third Trick}, author = {Hannes Diener and Matthew Hendtlass}, url = {https://lmcs.episciences.org/4255}, doi = {10.46298/lmcs-18(3:21)2022}, journal = {Logical Methods in Computer Science}, issn = {1860-5974}, volume = {Volume 18, Issue 3}, eid = 21, year = {2022}, month = {Aug}, keywords = {Mathematics - Logic, 03F60}, }