Rasoolzadegan, A., Abdollahzadeh Barforoush, Ahmad. “Bidirectional Transformation of Structural Modeling Elements between the UML Class Diagram and  Object-Z.” Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran, vol. 10, no. 4, 2013, pp. 69-85.