Zane Parks, Terry L. Smith. The inadequacy of Hughes and Cresswell's semantics for the CI systems. Notre Dame Journal of Formal Logic, 15(2):331-332, 1974. [doi]
@article{ParksS74,
title = {The inadequacy of Hughes and Cresswell's semantics for the CI systems},
author = {Zane Parks and Terry L. Smith},
year = {1974},
doi = {10.1305/ndjfl/1093891311},
url = {http://dx.doi.org/10.1305/ndjfl/1093891311},
researchr = {https://researchr.org/publication/ParksS74},
cites = {0},
citedby = {0},
journal = {Notre Dame Journal of Formal Logic},
volume = {15},
number = {2},
pages = {331-332},
}