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  1.  6
    Languages, Meta-Languages and METATEM, A Discussion Paper.Howard Barringer, Graham Gough, Derek Brough, Dov Gabbay & Ian Hodkinson - 1996 - Logic Journal of the IGPL 4 (2):255-272.
    Meta-languages are vital to the development and usage of formal systems, and yet the nature of meta-languages and associated notions require clarification. Here we attempt to provide a clear definition of the requirements for a language to be a meta-language, together with consideration of issues of proof theory, model theory and interpreters for such a language.
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    Modelling Evolvable Component Systems: Part I: A Logical Framework.Howard Barringer, Dov Gabbay & David Rydeheard - 2009 - Logic Journal of the IGPL 17 (6):631-696.
    We develop a logical modelling approach to describe evolvable computational systems. In this account, evolvable systems are built hierarchically from components where each component may have an associated supervisory process. The supervisor's purpose is to monitor and possibly change its associated component. Evolutionary change may be determined purely internally from observations made by the supervisor or may be in response to external change. Supervisory processes may be present at any level in the component hierarchy allowing us to use evolutionary behaviour (...)
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