Shawn Standefer. Trees for E. Logic Journal of the IGPL, 26(3):300-315, 2018. [doi]
@article{Standefer18-0, title = {Trees for E}, author = {Shawn Standefer}, year = {2018}, doi = {10.1093/jigpal/jzy003}, url = {https://doi.org/10.1093/jigpal/jzy003}, researchr = {https://researchr.org/publication/Standefer18-0}, cites = {0}, citedby = {0}, journal = {Logic Journal of the IGPL}, volume = {26}, number = {3}, pages = {300-315}, }