Timothy Williamson. Non-genuine MacIntosh logics. J. Philosophical Logic, 23(1):87-101, 1994. [doi]
@article{Williamson94, title = {Non-genuine MacIntosh logics}, author = {Timothy Williamson}, year = {1994}, doi = {10.1007/BF01417959}, url = {http://dx.doi.org/10.1007/BF01417959}, researchr = {https://researchr.org/publication/Williamson94}, cites = {0}, citedby = {0}, journal = {J. Philosophical Logic}, volume = {23}, number = {1}, pages = {87-101}, }