GORDEEV, L.; HAEUSLER, E. H. Proof Compression and NP Versus PSPACE II: Addendum. Bulletin of the Section of Logic, [S. l.], v. 51, n. 2, p. 197–205, 2022. DOI: 10.18778/0138-0680.2022.01. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/8755. Acesso em: 6 dec. 2022.