@article{AMLG_1987__26_138061,
     author = {Jan Krajicek},
     title = {A note on proofs of falsehood.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {169--176},
     publisher = {mathdoc},
     volume = {26},
     year = {1987},
     zbl = {0633.03056},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1987__26_138061/}
}