1. Balzer R. (1991) Tolerating Inconsistency. In: Belady L., Barstow D. R., Torii K. (eds.) Proceedings of the 13th international Conference on Software Engineering. ICSE ’91. IEEE Computer Society Press, Los Alamitos, CA, USA, pp. 158–165
2. Bork D., Sinz E. J. (2010) Design of a SOM Business Process Modelling Tool based on the ADOxx meta-modelling Platform. In: de Lara J., Varro D. (eds.) Pre-Proceedings of the 4th international Workshop on Graph-Based Tools. GraBaTs 2010. Enschede, The Netherlands, pp. 90–101
3. Engels G., Küster J. M., Heckel R., Groenewegen L. (2001) A methodology for specifying and analyzing consistency of object-oriented behavioral models. In: Gruhn V. (ed.) Proceedings of the 8th European Software Engineering Conference. ESEC. ACM, Vienna, Austria, pp. 186–195
4. Ferstl O. K., Sinz E. J. (1990) Objektmodellierung betrieblicher Informationssysteme im Semantischen Objektmodell (SOM). In: Wirtschaftsinformatik 32(6), pp. 566–581
5. Ferstl O. K., Sinz E. J. (2005) Modeling of Business Systems Using SOM. In: Bernus P., Mertins K., Schmidt G. (eds.) Handbook on Architectures of Information Systems. International Handbooks on Information Systems. Springer, Berlin, pp. 347–367