Linster, M.; Karbach, W.; Voss, A. and Walther; J. "An Analysis of the Role of Operational Modelling Languages in the Development of Knowledge-Based Systems"

Proceedings of Expert Systems and their Applicatio (1991) Proceedings of Expert Systems and their Applications, 11th International Workshop, Conference Tools, Techniques & Methods , May 27-31, Avignon, 1991.  

Languages mentioned MoMo {1992}