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@article{AMLG_1957__3_137733, author = {R. Montague and D. Kalish}, title = {Remarks on descriptions and natural deduction.}, journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung}, pages = {50--64}, publisher = {mathdoc}, volume = {3}, year = {1957}, zbl = {0081.24501}, url = {http://geodesic.mathdoc.fr/item/AMLG_1957__3_137733/} }
R. Montague; D. Kalish. Remarks on descriptions and natural deduction.. Archiv für mathematische Logik und Grundlagenforschung, Tome 3 (1957), pp. 50-64. http://geodesic.mathdoc.fr/item/AMLG_1957__3_137733/