@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/}
}