Data Representation and Qualitative Optimization - Some Issues in Enterprise Modeling. - Sulin Ba; Aimo Hinkkanen; Andrew B. Whinston (IEA/AIE, 1994)

On the usage of qualitative reasoning as an approach towards enterprise modelling. - Aimo Hinkkanen; Karl Reiner Lang; Andrew B. Whinston (Ann. Oper. Res., 1995)

Reasoning in qualitatively defined systems using interval-based difference equations. - Melody Y. Kiang; Aimo Hinkkanen; Andrew B. Whinston (IEEE Trans. Syst. Man Cybern., 1995)

A Set-Theoretical Foundation of Qualitative Reasoning and its Application to the Modeling of Economics and Business Management Problems. - Aimo Hinkkanen; Karl Reiner Lang; Andrew B. Whinston (Inf. Syst. Frontiers, 2003)