García Merayo, María De Las MercedesFrantzen, LarsNúñez García, Manuel2023-06-202023-06-202009-071567-832610.1016/j.jlap.2009.02.010https://hdl.handle.net/20.500.14352/42195This special issue contains the revised and extended versions of three papers presented in the 4th Workshop on Advances in Model-Based Testing (A-MOST 2008). In addition to an executive summary of these three papers, this preface briefly reviews the papers published in the four editions of the A-MOST workshop. We hope that the reader will find this special issue interesting and informative.engjournal articlehttp://www.sciencedirect.com/science/article/pii/S1567832609000277http://www.sciencedirect.com/restricted access519.8GenerationCoverageModelsInvestigación operativa (Matemáticas)1207 Investigación Operativa