@article{AMLG_1982__22_137988,
     author = {S. Caporaso and G. Pani},
     title = {Undecidability vs transfinite induction for the consistency of hyperarithmetical sets.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {19--26},
     publisher = {mathdoc},
     volume = {22},
     year = {1982},
     zbl = {0494.03038},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1982__22_137988/}
}