Fred Johnson. Syllogisms with fractional quantifiers. J. Philosophical Logic, 23(4):401-422, 1994. [doi]
@article{Johnson94-11, title = {Syllogisms with fractional quantifiers}, author = {Fred Johnson}, year = {1994}, doi = {10.1007/BF01048688}, url = {http://dx.doi.org/10.1007/BF01048688}, researchr = {https://researchr.org/publication/Johnson94-11}, cites = {0}, citedby = {0}, journal = {J. Philosophical Logic}, volume = {23}, number = {4}, pages = {401-422}, }