Djordje Cubric. There are denumerably many ternary intuitionistic Sheffer functions. Notre Dame Journal of Formal Logic, 29(4):579-581, 1988. [doi]
@article{Cubric88,
title = {There are denumerably many ternary intuitionistic Sheffer functions},
author = {Djordje Cubric},
year = {1988},
doi = {10.1305/ndjfl/1093638023},
url = {http://dx.doi.org/10.1305/ndjfl/1093638023},
researchr = {https://researchr.org/publication/Cubric88},
cites = {0},
citedby = {0},
journal = {Notre Dame Journal of Formal Logic},
volume = {29},
number = {4},
pages = {579-581},
}