Al-Ali, R. J., Rana, O. F., Walker, D. W., Jha, S., & Sohail, S. (2002). G-QoSM: Grid Service Discovery Using QoS Properties. Computing and Informatics, 21(4), 363–382. https://cai.type.sk/content/2002/4/g-qosm-grid-service-discovery-using-qos-properties/