Sentential logics and Maehara Interpolation Property. - Janusz Czelakowski (Stud Logica, 1985)

Algebraic aspects of deduction theorems. - Janusz Czelakowski (Stud Logica, 1985)

Key notions of Tarski's methodology of deductive systems. - Janusz Czelakowski; Grzegorz Malinowski (Stud Logica, 1985)

Local deductions theorems. - Janusz Czelakowski (Stud Logica, 1986)

Books received. - Janusz Czelakowski; Roger D. Maddux; Gerhard Schurz; Kazimierz Trzesicki (Stud Logica, 1986)

Books received. - Janusz Czelakowski; Gerhard Schurz; Andrzej Skowron (Stud Logica, 1989)

Books received. - Janusz Czelakowski; Jan Wolenski; Roman Murawski; Marek Zirk-Sadowski; Andrzej Skowron (Stud Logica, 1989)

Books received. - Janusz Czelakowski (Stud Logica, 1990)

Books received. - Janusz Czelakowski; Alasdair Urquhart; Ryszard Wójcicki; Jan Wolenski; Andrzej Sendlewski; Marcin Mostowski (Stud Logica, 1990)

A deduction theorem schema for deductive systems of propositional logics. - Janusz Czelakowski; Wieslaw Dziobiak (Stud Logica, 1991)

Books received. - Janusz Czelakowski; Lawrence S. Moss (Stud Logica, 1991)

Elements of Formal Action Theory. - Janusz Czelakowski (Logic, Action, and Information, 1996)

Deduction Theorems Within RM and Its Extensions. - Janusz Czelakowski; Wieslaw Dziobiak (J. Symb. Log., 1999)

Weakly Algebraizable Logics. - Janusz Czelakowski; Ramon Jansana (J. Symb. Log., 2000)

The Suszko Operator - Part I. - Janusz Czelakowski (Stud Logica, 2003)

Fregean logics. - Janusz Czelakowski; Don Pigozzi (Ann. Pure Appl. Log., 2004)

Equivalential Logics (After 25 Years of Investigations). - Janusz Czelakowski (Reports Math. Log., 2004)

Fregean logics with the multiterm deduction theorem and their algebraization. - Janusz Czelakowski; Don Pigozzi (Stud Logica, 2004)

On truth-schemes for intensional logics. - Janusz Czelakowski; Wieslaw Dziobiak (Reports Math. Log., 2006)

General Theory of the Commutator for Deductive Systems. Part I. Basic Facts. - Janusz Czelakowski (Stud Logica, 2006)

Induction Principles for Sets. - Janusz Czelakowski (Fundam. Informaticae, 2007)

Additivity of the commutator and residuation. - Janusz Czelakowski (Reports Math. Log., 2008)

Monotone Relations, Fixed Points and Recursive Definitions. - Janusz Czelakowski (Towards Mathematical Philosophy, 2009)

AC is Equivalent to the Coherence Principle. Corrigendum to my Paper "Induction Principles for Sets". - Janusz Czelakowski (Fundam. Informaticae, 2009)

Foreword. - Janusz Czelakowski; Wieslaw Dziobiak; Jacek Malinowski (Stud Logica, 2011)

Forcing for First-Order Languages from the Perspective of Rasiowa-Sikorski Lemma. - Janusz Czelakowski (Fundam. Informaticae, 2017)

Deontology of Compound Actions. - Janusz Czelakowski (Stud Logica, 2020)

Performability of Actions. - Janusz Czelakowski (J. Log. Lang. Inf., 2021)

Logics of Order and Related Notions. - Janusz Czelakowski; Adam Olszewski (Stud Logica, 2022)