Catalogs Library MPI CPfS
Catalogs other Libraries
OPAC MPI for the Physics of Complex Systems
OPAC Leibniz Institute for Solid State and Materials Research Dresden
OPAC Saxon State Library - Dresden State and University Library (SLUB)
Karlsruhe Virtual Catalog (KVK) - is a meta catalogue of all german University and State libraries, the National Library and a lot of international ones.