RT Journal Article SR Electronic(1) A1 Legault, J.M. A1 Kwan, K. A1 Plastow, G. A1 Han, Z. A1 Wilson, R. A1 Roux, P. A1 Fourie, C.J.S.YR 2017 T1 Ermelo Ring Road Risk Assessment for Coal Undermining using Airborne TDEM and Ground Geophysics JF , VO 2017 IS 1 SP 1 OP 5 DO https://doi.org/10.3997/2214-4609.201702176 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609.201702176