1. The Private Sector Waste Contracting Industry in Britain;Aspinwall and Company;Contract Report ETSU B1238,1990
2. The Technical Aspects of Controlled Waste Management. Understanding Landfill Gas: Practical Advice Arising from Landfill Gas Research;Aspinwall and Company,1992
3. A Preliminary Assessment of Methane Emissions from UK Landfills;Aumônier,1993
4. The UK Methane Emissions Inventory: A Scoping Study on the Use of Ambient Measurements to Reduce Uncertainties;Bellingham,1994
5. Guidelines for the Safe Control and Utilisation of Landfill Gas;Cooper;DoE Report No CWM 067A/92,1993