Martin W. Bunder. Category theory based on combinatory logic. Arch. Math. Log., 24(1):1-16, 1984. [doi]
@article{Bunder84, title = {Category theory based on combinatory logic}, author = {Martin W. Bunder}, year = {1984}, doi = {10.1007/BF02007137}, url = {http://dx.doi.org/10.1007/BF02007137}, researchr = {https://researchr.org/publication/Bunder84}, cites = {0}, citedby = {0}, journal = {Arch. Math. Log.}, volume = {24}, number = {1}, pages = {1-16}, }