Meier, O.
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Lautsprecher-Alarm-Systeme: Stand der Technnik und Entwicklungs-Konzepte. [Voice Alarm Systems: Technical and Applied Concepts.]
Siemens SBT, Mannedorf, Switzerland
International Conference on Automatic Fire Detection "AUBE '99", 11th. Proceedings. University of Duisburg. [Internationale Konferenz uber Automatischen Brandentdeckung.] March 16-18, 1999,
Duisburg, Germany,
Luck, H., Editors,
605-612 p.,
1999