===References===
* Boesch, A. and Schertenleib, R. (1985). Pit Emptying on-Site Excreta Disposal Systems. Field Tests with MechanizedEquipment in Gaborone (Botswana). International Reference Centre for Waste Disposal, Dübendorf, CH.
:Available at: [http://www.sandec.ch sandec.ch] (Comprehensive summary of technical components, performance with different sludge types, and maintenance)
* Chowdhry, S. and Koné, D. (2012). Business Analysis of Fecal Sludge Management: Emptying and TransportationServices in Africa and Asia. Bill & Melinda Gates Foundation, Seattle, US.
:Available at: [http://www.susana.org/library susana.org/library]
* O’Riordan, M. (2009). Investigation into Methods of Pit Latrine Emptying. Management of Sludge Accumulation in VIPLatrines. WRC Project 1745, Water Research Commission, Pretoria, ZA.
:Available at: [http://www.susana.org/library susana.org/library] (Includes a detailed analysis of field experiences with the Vacutug)
