Axiomatic systems in fuzzy algebra. - Józef Drewniak (Acta Cybern., 1981)

Equations in classes of fuzzy relations. - Józef Drewniak (Fuzzy Sets Syst., 1995)

Conjugacy Classes of Fuzzy Implications. - Michal Baczynski 001; Józef Drewniak (Fuzzy Days, 1999)

On a Class of Uninorms. - Józef Drewniak; Pawel Drygas (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 2002)

Generalized Compositions of Fuzzy Relations. - Józef Drewniak; Krzysztof Kula (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 2002)

Aggregations preserving classes of fuzzy relations. - Józef Drewniak; Urszula Dudziak (Kybernetika, 2005)

Invariant fuzzy implications. - Józef Drewniak (Soft Comput., 2006)

Compositions of invariant fuzzy implications. - Józef Drewniak; Jolanta Sobera (Soft Comput., 2006)

Preservation of properties of fuzzy relations during aggregation processes. - Józef Drewniak; Urszula Dudziak (Kybernetika, 2007)

Properties of fuzzy relations powers. - Józef Drewniak; Barbara Pekala (Kybernetika, 2007)

Distributivity between uninorms and nullnorms. - Józef Drewniak; Pawel Drygas; Ewa Rak (Fuzzy Sets Syst., 2008)

A survey of weak connectives and the preservation of their properties by aggregations. - Józef Drewniak; Anna Król (Fuzzy Sets Syst., 2010)

Subdistributivity and superdistributivity of binary operations. - Józef Drewniak; Ewa Rak (Fuzzy Sets Syst., 2010)

Properties of max-* fuzzy relation equations. - Józef Drewniak; Zofia Matusiewicz (Soft Comput., 2010)

Dual Connectives in Fuzzy Reasoning. - Józef Drewniak (IPMU (2), 2012)

Distributivity inequalities of monotonic operations. - Józef Drewniak; Ewa Rak (Fuzzy Sets Syst., 2012)

Fuzzy equations max - * with conditionally cancellative operations. - Józef Drewniak; Zofia Matusiewicz (Inf. Sci., 2012)

Increasing continuous operations in fuzzy max-⁎ equations and inequalities. - Zofia Matusiewicz; Józef Drewniak (Fuzzy Sets Syst., 2013)

Aggregations of MN-Convex Functions on Complete Lattices. - Urszula Bentkowska; Józef Drewniak (AGOP, 2015)

Convexity with Respect to Aggregations. - Urszula Bentkowska; Józef Drewniak (AGOP, 2015)

Properties of extremal families of MN-convex (MN-concave) functions. - Urszula Bentkowska; Susana Díaz; Józef Drewniak; Vladimír Janis; Susana Montes (Fuzzy Sets Syst., 2017)