@article{1203350879, author = {Segerlind, Nathan}, title = {The complexity of propositional proofs}, journal = {Bull. Symbolic Logic}, volume = {13}, number = {3}, year = {2007}, pages = { 417-481}, language = {en}, url = {http://dml.mathdoc.fr/item/1203350879} }
Segerlind, Nathan. The complexity of propositional proofs. Bull. Symbolic Logic, Tome 13 (2007) no. 3, pp. 417-481. http://gdmltest.u-ga.fr/item/1203350879/