9Roadifer R, Moore T, Raterman K, et al. Coalbed methane paramet- ric study: what's really important to production and when? In: SPE Annual Technical Conference and Exhibition, 2003.
10Gu F, Chalaturnyk R. Sensitivity study of coalbed methane produc- tion with reservoir and geomechanic coupling simulation. Journal of Canadian Petroleum Technology Journal Article, 2005; 44 ( 10 ) : 23 -32.