Lyons, S., Murphy, L., and Tol, R. (2011). Reply to Comment on Estimating Historical Landfill Quantities to Predict Methane Emissions, Atmospheric Environment, Vol. 45, Issue 39, December 2011, pp. 7533-7534, The Netherlands: Elsevier, http://dx.doi.org/10.1016/j.atmosenv.2011.10.014