1. Water treatment emergency: Cost evaluation tools;Acampa;Sustainability,2019
2. A Review of Ecosystem Valuation Techniques;Carson,2003
3. Estimating wetland values;Chaikumbung,2013
4. Economic Valuation of the Aquatic Biodiversity Conservation in South Korea: Correcting for the Endogeneity Bias in Contingent Valuation;Choi;Sustainability,2017
5. Danert, K., Luutu, A., Carter, R. and Olschewski, A. (2010). Costing and pricing, a guide for water well drilling enterprises. Rural water supply networks. Switzerland. 16 pgs.