Combinatorial individual differences scaling within the city-block metric. - Hans-Friedrich Köhn (Comput. Stat. Data Anal., 2006)

Representation of individual differences in rectangular proximity data through anti-Q matrix decomposition. - Hans-Friedrich Köhn (Comput. Stat. Data Anal., 2010)

Exact and approximate methods for a one-dimensional minimax bin-packing problem. - Michael J. Brusco; Hans-Friedrich Köhn; Douglas L. Steinley (Ann. Oper. Res., 2013)

A Proof of the Duality of the DINA Model and the DINO Model. - Hans-Friedrich Köhn; Chia-Yi Chiu (J. Classif., 2016)

How to Build a Complete Q-Matrix for a Cognitively Diagnostic Test. - Hans-Friedrich Köhn; Chia-Yi Chiu (J. Classif., 2018)

Attribute Hierarchy Models in Cognitive Diagnosis: Identifiability of the Latent Attribute Space and Conditions for Completeness of the Q-Matrix. - Hans-Friedrich Köhn; Chia-Yi Chiu (J. Classif., 2019)

Residual analysis for unidimensional scaling in the L2-norm. - Michael J. Brusco; Douglas L. Steinley; Hans-Friedrich Köhn (Commun. Stat. Simul. Comput., 2019)

A Unified Theory of the Completeness of Q-Matrices for the DINA Model. - Hans-Friedrich Köhn; Chia-Yi Chiu (J. Classif., 2021)