Masters, I., Rees, I., Masters, I., Malan, A., & Lewis, R. (2004). An edge-based finite volume scheme for saturated–unsaturated groundwater flow. Computer Methods in Applied Mechanics and Engineering, 193(42-44), pp. -4759. doi:10.1016/j.cma.2004.04.003

Masters, Ian, I. Rees, I. Masters, A.G Malan, and R.W Lewis. "An Edge-based Finite Volume Scheme for Saturated–unsaturated Groundwater Flow." Computer Methods in Applied Mechanics and Engineering 193, no. 42-44 (2004): -4759.

Masters, Ian, et al. "An Edge-based Finite Volume Scheme for Saturated–unsaturated Groundwater Flow." Computer Methods in Applied Mechanics and Engineering 193.42-44 (2004): -4759.