A Temporal Calculus of Communicating Systems
CONCUR '90 Proceedings of the Theories of Concurrency: Unification and Extension
Relating Processes With Respect to Speed
CONCUR '91 Proceedings of the 2nd International Conference on Concurrency Theory
An Overview and Synthesis on Timed Process Algebras
CAV '91 Proceedings of the 3rd International Workshop on Computer Aided Verification
On asynchrony in name-passing calculi
Mathematical Structures in Computer Science
Structured communication-centred programming for web services
ESOP'07 Proceedings of the 16th European conference on Programming
A calculus for orchestration of web services
ESOP'07 Proceedings of the 16th European conference on Programming
TGC'05 Proceedings of the 1st international conference on Trustworthy global computing
SOCK: a calculus for service oriented computing
ICSOC'06 Proceedings of the 4th international conference on Service-Oriented Computing
Foundations of web transactions
FOSSACS'05 Proceedings of the 8th international conference on Foundations of Software Science and Computation Structures
SCC: a service centered calculus
WS-FM'06 Proceedings of the Third international conference on Web Services and Formal Methods
A language for task orchestration and its semantic properties
CONCUR'06 Proceedings of the 17th international conference on Concurrency Theory
Theoretical foundations of scope-based compensable flow language for web service
FMOODS'06 Proceedings of the 8th IFIP WG 6.1 international conference on Formal Methods for Open Object-Based Distributed Systems
A trace semantics for long-running transactions
CSP'04 Proceedings of the 2004 international conference on Communicating Sequential Processes: the First 25 Years
On the Relationships among four Timed Process Algebras
Fundamenta Informaticae
Specifying and Analysing SOC Applications with COWS
Concurrency, Graphs and Models
A WSDL-based type system for asynchronous WS-BPEL processes
Formal Methods in System Design
Time and exceptional behavior in multiparty structured interactions
WS-FM'11 Proceedings of the 8th international conference on Web Services and Formal Methods
Recovery within long-running transactions
ACM Computing Surveys (CSUR)
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COWS (Calculus for Orchestration of Web Services) is a foundational language for Service Oriented Computing that combines in an original way a number of ingredients borrowed from well-known process calculi, e.g. asynchronous communication, polyadic synchronization, pattern matching, protection, delimited receiving and killing activities, while resulting different from any of them. In this paper, we extend COWS with timed orchestration constructs, this way we obtain a language capable of completely formalizing the semantics of WS-BPEL, the 'de facto' standard language for orchestration of web services. We present the semantics of the extended language and illustrate its peculiarities and expressiveness by means of several examples.