HeTS: the Heterogeneous Tool Set (2E1Q)
see: http://www.informatik.uni-bremen.de/agbkb/forschung/formal_methods/CoFI/hets/index_e.htm (2E1R)
Ref. also ... (2E1S)
- the talk given by Professor JohnBateman (University of Bremen, Germany) on "Ontological Modularity for Shared and Integrated Ontologies" (2E1T)