Heat Flux 5 : The measure of the rate of heat transfer to a surface. Heat flux is expressed in kilowatts/m2, kilojoules/m2/sec, or Btu/ft2/sec. NFPA 921, 2004 ed.
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}
Ingenieurbro Frank Markmann, Fire, Arson & Explosion Investigation in Germany and Europe, Fire Investigators Dictionary (The English definitions 1995 Edition of NFPA 921 Guide for Fire and Explosion Investigation), Wald, Germany (Revised 2008), http://www.fmfire.de/fidicteg.html, (FrInv - Brit) {94}