@article{AMLG_1974__16_137892,
     author = {B. Scarpellini},
     title = {Disjunctive properties of intuitionistic systems.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {147--158},
     year = {1974},
     volume = {16},
     zbl = {0299.02035},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1974__16_137892/}
}