E. Lippe

A unifying framework for conceptual data modelling concepts

Arthur H. M. ter Hofstede, Paul J. M. Frederiks, E. Lippe, 1997, Inf. Softw. Technol..

Conceptual Data Modelling from a Categorical Perspective

Arthur H. M. ter Hofstede, Paul J. M. Frederiks, E. Lippe, 1996, Comput. J..

Applications of a categorical framework for conceptual data modeling

Arthur H. M. ter Hofstede, Theo P. van der Weide, E. Lippe, 1997, Acta Informatica.

A Category Theory Approach to Conceptual Data Modeling

Arthur H. M. ter Hofstede, E. Lippe, A. Hofstede, 1996, RAIRO Theor. Informatics Appl..