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* [http://www.lboro.ac.uk/well/resources/technical-briefs/41-vlom-pumps.pdf VLOM pumps.]
* [http://www.fairwater.org BluePumps & BlueBottles for a Better World, Here & There!]
* [http://www.bvsde.paho.org/bvsacd/cd46/task162.pdf VLOM for Rural Water Supply: Lessons from Experience.] WELL, Water and Environmental Health.
