AIP and FIZ Karlsruhe renew agreement. The American Institute of Physics (AIP), and Fachinformationszentrum Energie, Physik, Mathematik GmbH of Karlsruhe (FIZ Karlsruhe) in the Federal Republic of Germany, have announced the renewal of a seven‐year‐old agreement on scientific communications. The renewed agreement provides for improved international access to Physics Briefs, the computerised database of physics information.