The equivalence of Nonassociative Lambek Categorial Grammars and Context-Free Grammars. - Maciej Kandulski (Math. Log. Q., 1988)

Phrase Structure Languages Generated by Categorial Grammars With Product. - Maciej Kandulski (Math. Log. Q., 1988)

Surgical Wound Infection - Conducive Factors and Their Mutual Dependencies. - Maciej Kandulski; Jacek Marciniec; Konstanty Tukallo (Intelligent Decision Support, 1992)

Normal Form of Derivations in the Nonassociative and Commutative Lambek Calculus with Product. - Maciej Kandulski (Math. Log. Q., 1993)

On Commutative and Nonassociative Syntactic Calculi and Categorial Grammars. - Maciej Kandulski (Math. Log. Q., 1995)

Strong Equivalence of Generalized Ajdukiewicz and Lambek Grammars. - Maciej Kandulski (LACL, 1997)

On Generalized Ajdukiewicz and Lambek Calculi and Grammars. - Maciej Kandulski (Fundam. Informaticae, 1997)

Derived Tree Languages of Nonassociative Lambek Categorial Grammars with Product. - Maciej Kandulski (Fundam. Informaticae, 2003)

Categorial Grammars and Tree Languages. - Maciej Kandulski (J. Log. Comput., 2004)