%0 Generic %D 2015 %T Proceedings of the 4th International Workshop on Bidirectional Transformations co-located with Software Technologies: Applications and Foundations %A Alcino Cunha %A Ekkart Kindler %C Braga, Portugal %I HASLab/ INESC TEC & University of Minho %8 July %> https://haslab.uminho.pt/sites/default/files/alcino/files/preface.pdf