1. Gas emission from broken coal;Airey;Int J Rock Mech Min Sci,1968
2. A theory of gas emission in mining operations;Airey,1971
3. Firedamp Drainage Handbook for the Coalmining Industry in the European Community;Boxho,1980
4. Methane emissions from Coal Mining: Issues and Opportunities for Reduction;Boyer,1990
5. Firedamp prediction and control;CEC,1982