New Compatibility Results for Implementations within the Initial Algebraic Approach. - Hartmut Ehrig; Helmut Adametz (Bull. EATCS, 1991)

New Compatibility Results for Implementations within the Initial Algebraic Approach. - Hartmut Ehrig; Helmut Adametz (Current Trends in Theoretical Computer Science, 1993)

An Open, Transparent, Community-based Development Process for Interoperability Specifications. - Helmut Adametz; Andreas Billig; Sören Bittins; Jan Gottschick (PDP, 2009)