Andrzej Orlicki. Multimorphisms over enumerated sets. Notre Dame Journal of Formal Logic, 34(4):527-538, 1993. [doi]
@article{Orlicki93-0, title = {Multimorphisms over enumerated sets}, author = {Andrzej Orlicki}, year = {1993}, url = {http://projecteuclid.org/euclid.ndjfl/1093633904}, researchr = {https://researchr.org/publication/Orlicki93-0}, cites = {0}, citedby = {0}, journal = {Notre Dame Journal of Formal Logic}, volume = {34}, number = {4}, pages = {527-538}, }