Martin W. Bunder. Illative combinatory logic without equality as a primitive predicate. Notre Dame Journal of Formal Logic, 23(1):62-70, 1982. [doi]
@article{Bunder82,
title = {Illative combinatory logic without equality as a primitive predicate},
author = {Martin W. Bunder},
year = {1982},
doi = {10.1305/ndjfl/1093883566},
url = {http://dx.doi.org/10.1305/ndjfl/1093883566},
researchr = {https://researchr.org/publication/Bunder82},
cites = {0},
citedby = {0},
journal = {Notre Dame Journal of Formal Logic},
volume = {23},
number = {1},
pages = {62-70},
}