@article{AMLG_1978__19_137952,
     author = {M. Coppo and M. Dezani-Ciancaglini},
     title = {A new type assignment for ...-terms.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {139--156},
     publisher = {mathdoc},
     volume = {19},
     year = {1978},
     zbl = {0418.03010},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1978__19_137952/}
}