Timothy Smiley. The Independence of Connectives. Journal of Symbolic Logic, 27(4):426-436, 1962.
@article{Smiley62a,
title = {The Independence of Connectives},
author = {Timothy Smiley},
year = {1962},
researchr = {https://researchr.org/publication/Smiley62a},
cites = {0},
citedby = {0},
journal = {Journal of Symbolic Logic},
volume = {27},
number = {4},
pages = {426-436},
}