Volume 21, Numbers 1-2, February 2009

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  Eerke A. Boiten: Editorial. 1
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  Marcel Oliveira, Ana Cavalcanti, Jim Woodcock: A UTP semantics for Circus. 3-32
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  Bernhard K. Aichernig, Jifeng He: Mutation testing in UTP. 33-64
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  Eerke A. Boiten, John Derrick, Gerhard Schellhorn: Relational concurrent refinement part II: Internal operations and outputs. 65-102
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  Liang Zhao, Xiaojian Liu, Zhiming Liu, Zongyan Qiu: Graph transformations for object-oriented refinement. 103-131
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  Leo Freitas, Jim Woodcock: FDR Explorer. 133-154
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  Graeme Smith, Kirsten Winter: Model checking action system refinements. 155-186
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  Lindsay Groves, Robert Colvin: Trace-based derivation of a scalable lock-free stack algorithm. 187-223

Volume 21, Number 3, May 2009

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  Paul Boca, Raymond T. Boute, David Duce, José Oliveira: Editorial. 225
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  Ralph-Johan Back: Invariant based programming: basic approach and teaching experiences. 227-244
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  Peter Gorm Larsen, John S. Fitzgerald, Steve Riddle: Practice-oriented courses in formal methods using VDM⁺⁺. 245-257
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  Yih-Kuen Tsay, Yu-Fang Chen, Ming-Hsien Tsai, Kang-Nien Wu, Wen-Chin Chan, Chi-Jian Luo, Jinn-Shu Chang: Tool support for learning Büchi automata and linear temporal logic. 259-275
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  Wolfgang Schreiner: The RISC ProofNavigator: a proving assistant for program verification in the classroom. 277-291
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  Ingo Feinerer, Gernot Salzer: A comparison of tools for teaching formal software verification. 293-301

Volume 21, Number 4, August 2009

Special Issue: Concurrency and Real-Time for Eiffel-like Languages

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  Richard F. Paige, Phillip J. Brooke: Editorial. 303
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  Piotr Nienaltowski, Bertrand Meyer, Jonathan S. Ostroff: Contracts for concurrency. 305-318
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  Jonathan S. Ostroff, Faraz Ahmadi Torshizi, Hai Feng Huang, Bernd Schoeller: Beyond contracts for concurrency. 319-346
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  Piotr Nienaltowski: Flexible access control policy for SCOOP. 347-362
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  Phillip J. Brooke, Richard F. Paige: Cameo: an alternative model of concurrency for Eiffel. 363-391

Volume 21, Number 5, October 2009

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  Richard Bornat: Peter Landin: a computer scientist who inspired a generation, 5th June 1930 - 3rd June 2009. 393-395
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  Soon-Kyeong Kim, David A. Carrington: A formalism to describe design patterns based on role concepts. 397-420
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  Paul Howells, Mark d'Inverno: A CSP model with flexible parallel termination semantics. 421-449
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  Chunqing Chen, Jin Song Dong, Jun Sun: A formal framework for modeling and validating Simulink diagrams. 451-483
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  Daniel Kroening, Ofer Strichman: A framework for Satisfiability Modulo Theories. 485-494
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  Cristian Masalagiu, Wei-Ngan Chin, Stefan Andrei, Vasile Alaiba: A rigorous methodology for specification and verification of business processes. 495-510

Volume 21, Number 6, December 2009

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  Antonio Cerone, Paul Curzon, David Duce: Editorial. 511-512
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  Li Su, Howard Bowman, Philip Barnard, Bradley P. Wyble: Process algebraic modelling of attentional capture and human electrophysiology in interactive systems. 513-539
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  Rimvydas Ruksenas, Jonathan Back, Paul Curzon, Ann Blandford: Verification-guided modelling of salience and cognitive load. 541-569
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  Thomas Anung Basuki, Antonio Cerone, Andreas Griesmayer, Rudolf Schlatte: Model-checking user behaviour using interacting components. 571-588
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  Judy Bowen, Steve Reeves: Refinement for user interface designs. 589-612
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  Alan J. Dix, Masitah Ghazali, Steve Gill, Joanna Hare, Devina Ramduny-Ellis: Physigrams: modelling devices for natural interaction. 613-641