00560nas a2200217   4500000000100000008004100001260002800042100001600070700001400086700001500100700001700115700001800132700002000150700001700170700001900187700002000206700002100226245006100247300001200308020002200320       2008                            d  bSpringer USaBoston, MA1 aLiviu Joita1 aOmer Rana1 aIsaac Chao1 aPablo Chacin1 aFelix Freitag1 aLeandro Navarro1 aOscar Ardaiz1 aDomenico Talia1 aRamin Yahyapour1 aWolfgang Ziegler00aService Level Agreements in Catallaxy-Based Grid Markets  a387-396  a978-0-387-78446-5