9CHEN X D. Safer estimate of time - to - ignition of reactive porous solid slab based on a simplified heat conduction term in Frank -Kamnetskii theory of thermal ignition [ J ]. Chemical Engineering and Processing, 1997 (36).
10Nugroho Y S, McIntosh A C, Gibbs B M. Low - temperature oxidation of single and blended coals [J]. Fuel, 2000 (97).