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Are you Hartmut Ehrig, author of the books below?
Fundamentals of Algebraic Specification 2 by Hartmut Ehrig Mathematisch-strukturelle Grundlagen der Informatik (Springer... by Hartmut Ehrig Formal and Natural Computing by Hartmut Ehrig HANDBOOK OF GRAPH GRAMMARS AND COMPUTING BY GRAPH TRANSFORMAT... by Hartmut Ehrig Fundamentals of Algebraic Specification 1 by Hartmut Ehrig Graph Transformations by Hartmut Ehrig Graph Transformations by Hartmut Ehrig Graph Grammars and Their Application to Computer Science by Hartmut Ehrig TAPSOFT '87 by Hartmut Ehrig TAPSOFT '87 by Hartmut Ehrig


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