5Wang Zhenghui. The statistic method to plot Three Zones of spontaneous combustion in gob [ C ]. Mine Hazards Prevention and Control Technology. Science Press,2007.
8Zwak J, Selcl P. Occurrence of carbon monoxide in the drainage at-mosphere in 1. maj Mine [ A ]. Proceedings of the Conference on 30 Years of the Mine Drainage[ C]. DT Ostrava, 1988.
9Taraba B. Disintegration of coal as a non-oxidative source of carbon monoxide [ J ]. Mining Engineer, 1994,8:55-56.