1. Zeng, L., Benatallah, B., Ngu, A., Dumas, M., Kalagnanam, J., Chang, H.: Qos-aware middleware for web services composition. In: ITSE 2004: IEEE Trans. on Software Engr. (2004)
2. Casati, F., Ilnicki, S., Jin, L., Krishnamoorthy, V., Shan, M.: Adaptive and dynamic service composition in eflow. Tech. Report, HPL-200039, Software Tech. Lab. (2000)
3. Zeng, L., Benatallah, B., Dumas, M., Kalagnanam, J., Sheng, Q.: Quality driven web service composition. In: WWW 2003: Proc. of 12th Int. World Wide Web Conf. (2003)
4. Lecture Notes in Computer Science;G. Piccinelli,2001
5. Mahbub, K., Spanoudakis, G.: A framework for requirements monitoring of service based systems. In: ICSOC 2004: Proc. of the 2nd Int. Conf. on Service Oriented Computing (2004)