Herman Rubin, Jean E. Rubin. A theorem on n-tuples which is equivalent to the well-ordering theorem. Notre Dame Journal of Formal Logic, 8(1-2):48-50, 1967. [doi]
@article{RubinR67,
title = {A theorem on n-tuples which is equivalent to the well-ordering theorem},
author = {Herman Rubin and Jean E. Rubin},
year = {1967},
doi = {10.1305/ndjfl/1093956243},
url = {http://dx.doi.org/10.1305/ndjfl/1093956243},
researchr = {https://researchr.org/publication/RubinR67},
cites = {0},
citedby = {0},
journal = {Notre Dame Journal of Formal Logic},
volume = {8},
number = {1-2},
pages = {48-50},
}