id: 50221096 dt: j an: 50221096 au: Biswas, Debmalya; Vidyasankar, Krishnamurthy ti: Optimal compensation for hierarchical web services compositions under restricted visibility so: IJISSS 3, No. 4, 22-38 (2011). py: 2011 pu: la: EN cc: ut: ci: li: doi:10.4018/jisss.2011100102