Kenji Fukuzaki, Akito Tsuboi. Implicit Definability of Subfields. Notre Dame Journal of Formal Logic, 44(4):217-225, 2003. [doi]
@article{FukuzakiT03, title = {Implicit Definability of Subfields}, author = {Kenji Fukuzaki and Akito Tsuboi}, year = {2003}, url = {http://projecteuclid.org/euclid.ndjfl/1091122499}, researchr = {https://researchr.org/publication/FukuzakiT03}, cites = {0}, citedby = {0}, journal = {Notre Dame Journal of Formal Logic}, volume = {44}, number = {4}, pages = {217-225}, }