@article{1183742164, author = {Yukami, Tsuyoshi}, title = {Taking Out $LK$ Parts from a Proof in Peano Arithmetic}, journal = {J. Symbolic Logic}, volume = {51}, number = {1}, year = {1986}, pages = { 682-700}, language = {en}, url = {http://dml.mathdoc.fr/item/1183742164} }
Yukami, Tsuyoshi. Taking Out $LK$ Parts from a Proof in Peano Arithmetic. J. Symbolic Logic, Tome 51 (1986) no. 1, pp. 682-700. http://gdmltest.u-ga.fr/item/1183742164/