%O Book %T Specification of Requirements for Upgrades Using Digital Instrument and Control Systems - Report Prepared within the Framework of the International Working Group on Nuclear Power Plant Control and Instrumentation %A %U http://www.dgdingfa.net/publications/5363/specification-of-requirements-for-upgrades-using-digital-instrument-and-control-systems-report-prepared-within-the-framework-of-the-international-working-group-on-nuclear-power-plant-control-and-instrumentation %D 1999 %I INTERNATIONAL ATOMIC ENERGY AGENCY %C Vienna