Pólya enumeration of expansions of resolvable incidence structures. - Dieter Schäfer; Karl Erich Wolff (Discret. Math., 1983)

Numerical Aspects in the Data Model of Conceptual Information Systems. - Gerd Stumme; Karl Erich Wolff (ER Workshops, 1998)

A Conceptual View of Knowledge Bases in Rough Set Theory. - Karl Erich Wolff (Rough Sets and Current Trends in Computing, 2000)

Interpretation of Automata in Temporal Concept Analysis. - Karl Erich Wolff (ICCS, 2002)

Concepts in Fuzzy Scaling Theory: order and granularity. - Karl Erich Wolff (Fuzzy Sets Syst., 2002)

Time Dimension, Objects, and Life Tracks. A Conceptual Analysis. - Karl Erich Wolff; Wendsomde Yameogo (ICCS, 2003)

'Particles' and 'Waves' as Understood by Temporal Concept Analysis. - Karl Erich Wolff (ICCS, 2004)

Towards a Conceptual Theory of Indistinguishable Objects. - Karl Erich Wolff (ICFCA, 2004)

States, Transitions, and Life Tracks in Temporal Concept Analysis. - Karl Erich Wolff (Formal Concept Analysis, 2005)

States of Distributed Objects in Conceptual Semantic Systems. - Karl Erich Wolff (ICCS, 2005)

Turing Machine Representation in Temporal Concept Analysis. - Karl Erich Wolff; Wendsomde Yameogo (ICFCA, 2005)

Applications of Temporal Conceptual Semantic Systems. - Karl Erich Wolff (KONT/KPP, 2007)

Conceptual Representation of Gene Expression Processes. - Johannes Wollbold; René Huber; Raimund W. Kinne; Karl Erich Wolff (KONT/KPP, 2007)

Relational Scaling in Relational Semantic Systems. - Karl Erich Wolff (ICCS, 2009)

Temporal Relational Semantic Systems. - Karl Erich Wolff (ICCS, 2010)

Position Paper: Pragmatics in Fuzzy Theory. - Karl Erich Wolff (RSFDGrC, 2011)

Analyzing Chat Conversations of Pedophiles with Temporal Relational Semantic Systems. - Paul Elzinga; Karl Erich Wolff; Jonas Poelmans (EISIC, 2012)

Applications of Temporal Conceptual Semantic Systems. - Karl Erich Wolff (Semantic Applications, 2018)

Temporal Concept Analysis with SIENA. - Karl Erich Wolff (ICFCA (Supplements), 2019)