On the Iterated ω-Rule. - Grzegorz Michalski (Math. Log. Q., 1992)

Relatively Recursively Enumerable Versus Relatively Sigma1 in Models of Peano Arithmetic. - Grzegorz Michalski (Math. Log. Q., 1995)

The use of the internet by older adults in Poland. - Szymon Dziuba; Anna Cierniak-Emerych; Grzegorz Michalski; Petra Poulova; Hana Mohelská; Blanka Klímová (Univers. Access Inf. Soc., 2021)