NFPA 75 Standard for the Protection of Electronic Computer/ Data Processing Equipment 1999 ed. http://tmpccc.com/uploads/Laws/NFPA/A_NFPA75.pdf, (Std: Prot of Electr Comput/ Data Procss Equip - Amer) {223 NFC}
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}