National Fire Protection Association, Illustrated Dictionary of Fire Service Terms, Jones & Bartlett Publishers, MA. USA 2006. https://books.google.com.kw/books?id=W0WIRa3Gl4QC& printsec=frontcover&source=gbs_ge_summary_r&cad=0# v=onepage&q&f=false, (Fr Srvc - Amer) {141}
NFPA 259 Standard Test Method for Potential Heat of Building Materials 1998 ed. http://www.nfpa.org/assets/files/AboutTheCodes/259 /259-F2002-rop.pdf, (Std: Tst Meth for Potential Heat of Build Mtrl - Amer) {275 NFC}