Jan A. Bergstra. Degrees of partial functions. Notre Dame Journal of Formal Logic, 19(1):152-154, 1978. [doi]
@article{Bergstra78-0,
title = {Degrees of partial functions},
author = {Jan A. Bergstra},
year = {1978},
doi = {10.1305/ndjfl/1093888219},
url = {http://dx.doi.org/10.1305/ndjfl/1093888219},
researchr = {https://researchr.org/publication/Bergstra78-0},
cites = {0},
citedby = {0},
journal = {Notre Dame Journal of Formal Logic},
volume = {19},
number = {1},
pages = {152-154},
}