@article{AMLG_1987__26_138059,
     author = {L. Gordeev},
     title = {On cut elimination in the presence of peirce rule.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {147--164},
     publisher = {mathdoc},
     volume = {26},
     year = {1987},
     zbl = {0639.03059},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1987__26_138059/}
}