Modified modus ponens and modal logic. - Jorma K. Mattila (Kybernetika, 1992)

Letter to the editor: Consistency of LPC+Ch. - Jorma K. Mattila (Kybernetika, 1998)

On modifiers based on n-placed functions. - Jorma K. Mattila (EUSFLAT Conf., 2003)

Modifier Logics Based on Graded Modalities. - Jorma K. Mattila (J. Adv. Comput. Intell. Intell. Informatics, 2003)

On Aristotelian tradition and fuzzy revolution. - Jorma K. Mattila (FUZZ-IEEE, 2004)

Modifiers based on some t-norms in fuzzy logic. - Jorma K. Mattila (Soft Comput., 2004)

Training RBF Networks Using a DE Algorithm with Adaptive Control. - Junhong Liu; Jorma K. Mattila; Jouni Lampinen (ICTAI, 2005)

Editorial: From Basic Research to Applications. - Jorma K. Mattila (J. Adv. Comput. Intell. Intell. Informatics, 2005)

On Lukasiewicz Modifier Logic. - Jorma K. Mattila (J. Adv. Comput. Intell. Intell. Informatics, 2005)

On Models in Fuzzy Propositional Logic. - Jorma K. Mattila (KES (3), 2006)

Possibility Based Modal Semantics for Graded Modifiers. - Jorma K. Mattila (IFSA (1), 2007)

Solving leontief input-output model with fuzzy entries. - Jorma K. Mattila; Pasi Luukka (FUZZ-IEEE, 2009)

On Lukasiewicz' Infinie-Valued Logic and FuzzyL. - Jorma K. Mattila (KES (4), 2010)

On Modal Operators in Łukasiewicz' n-Valued Logics. - Jorma K. Mattila (IPMU (1), 2012)

A Note on Fuzzy-Valued Inference. - Jorma K. Mattila (Fuzzy Technology, 2016)

First Steps Toward Fuzzy Number-valued Propositional Logic. - Jorma K. Mattila (J. Multiple Valued Log. Soft Comput., 2017)