Somaratne, N., Zulfic, H., Ashman, G., Vial, H., Swaffer, B., & Frizenschaf, J. (2013). Groundwater Risk Assessment Model (GRAM): Groundwater Risk Assessment Model for Wellfield Protection. MDPI AG.

Somaratne, Nara, Hajrudin Zulfic, Glyn Ashman, Hayley Vial, Brooke Swaffer, ja Jacqueline Frizenschaf. Groundwater Risk Assessment Model (GRAM): Groundwater Risk Assessment Model for Wellfield Protection. MDPI AG, 2013.

Somaratne, Nara, et al. Groundwater Risk Assessment Model (GRAM): Groundwater Risk Assessment Model for Wellfield Protection. MDPI AG, 2013.