标题：Conceptual modeling of service composition using aggregation and specialization relationships
来源：ACM Southeast Regional Conference
Proceedings of the 44th annual Southeast regional conference Melbourne, Florida  
页数：Pages: 452 - 457   
年 : 2006
相关链接： http://portal.acm.org/citation.cfm?id=1185548  
论文作者：Ricardo Quintero, Vicente Pelechano