1. ISO 9001:2015. Quality management principles. Available: http://www.iso.org/iso/pub100080.pdf.
2. OCL 2.0. Object Constraint Language™. Version 2.0. Release date: May 2006. Available: http://www.omg.org/spec/OCL/2.0/.
3. Business Process Models and Information System Usability;Bicevskis;Procedia Computer Science.,2015
4. H aan JD. 8 Reasons Why Model-Driven Approaches (will) Fail; 2008. Available: http://www.infoq.com/articles/8-reasons-why-MDE-fails.
5. Seidewitz E. Executable UML Roadmap; 2014. Available: http://www.slideshare.net/seidewitz/xumlpresentation-140917-executable-uml-roadmap.