A supplement to Gottwald's note on fuzzy cardinals. - Maciej Wygralak (Kybernetika, 1984)

Generalized Cardinal Numbers and Their Ordering. - Maciej Wygralak (IPMU, 1990)

On the Best Scalar Approximation of Cardinality of a Fuzzy Set. - Maciej Wygralak (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 1997)

Questions of cardinality of finite fuzzy sets. - Maciej Wygralak (Fuzzy Sets Syst., 1999)

A look at metrics and norms through the Lukasiewicz logic. - Maciej Wygralak (J. Appl. Non Class. Logics, 1999)

An axiomatic approach to scalar cardinalities of fuzzy sets. - Maciej Wygralak (Fuzzy Sets Syst., 2000)

On Cardinality and Singular Fuzzy Sets. - Krzysztof Dyczkowski; Maciej Wygralak (Fuzzy Days, 2001)

Fuzzy sets with triangular norms and their cardinality theory. - Maciej Wygralak (Fuzzy Sets Syst., 2001)

Intuitionistic fuzzy sets - an alternative look. - Anna Pankowska; Maciej Wygralak (EUSFLAT Conf., 2003)

Cardinalities of fuzzy sets with triangular norms. - Maciej Wygralak (EUSFLAT Conf., 2003)

On triangular norm-based generalized cardinals and singular fuzzy sets. - Krzysztof Dyczkowski; Maciej Wygralak (Fuzzy Sets Syst., 2003)

On Hesitation Degrees in IF-Set Theory. - Anna Pankowska; Maciej Wygralak (ICAISC, 2004)

General IF-sets with triangular norms and their applications to group decision making. - Anna Pankowska; Maciej Wygralak (Inf. Sci., 2006)

Representing Incomplete Knowledge about Fuzzy Sets. - Maciej Wygralak (EUSFLAT Conf. (2), 2007)

On nonstrict Archimedean triangular norms, Hamming distances, and cardinalities of fuzzy sets. - Maciej Wygralak (Int. J. Intell. Syst., 2009)

Hesitation Degrees as the Size of Ignorance Combined with Fuzziness. - Maciej Wygralak (IPMU (1), 2010)

Intelligent Counting Under Information Imprecision - Applications to Intelligent Systems and Decision Support - Maciej Wygralak (Springer, 2013)

Intelligent Counting - Methods and Applications. - Maciej Wygralak (IEEE Conf. on Intelligent Systems (1), 2014)

A Bipolar View on Medical Diagnosis in OvaExpert System. - Anna Stachowiak; Krzysztof Dyczkowski; Andrzej Wójtowicz; Patryk Zywica; Maciej Wygralak (FQAS, 2015)

An algorithmic study of relative cardinalities for interval-valued fuzzy sets. - Patryk Zywica; Anna Stachowiak; Maciej Wygralak (Fuzzy Sets Syst., 2016)