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Transportation Research Procedia,
Volume 14, 2016, pp. 2688–2697.
- -The ACO Group (2015), “drainage and water treatment solutions”: ACO Severing Ahlmann, Germany.
- The ACO Group (2014), “Site Installation Manual, Polymer Concrete Drain Systems”: ACO Systems FZE, United Arab Emirates.
- The ACO Group (2015), “ACO point drainage”: ACO Systems FZE, Mozambique.
- The ACO Group (2014), “ACO Kerb Drain”: ACO Systems FZE, Switzerland.
- The ACO Group (2015), “Gullies and gully tops for bridge drainage and refurbishment”, ACO Systems FZE, Russia.
- The ACO Group (2015), “ACO Cast and ductile iron products”, ACO Systems FZE, South Africa.
- Fiber Lite Company (2015), “GRP Composite Trench Covers Technical Guide”, Fiber Lite, United States.
- FTRC Company (2013), “Man ways Maintenance and Operations Manual”, Flow Trend, Canada.
- Government of Hong Kong (2013), “STORMWATER DRAINAGE MANUAL, Planning, Design and Management”, China, May.
- Structural Science Company (SSC) (2016), “Composite Manhole Covers”, United States, Website: www.structuralscience.net.
- Stabile (2014), “Manhole Cover Locking System”, England ,Website:
www.stabiloc.com
- Tallinnavesi (2012), “Manhole Cover Problems and Solutions”, Finland, Website:
www.tallinnavesi.ee.
- EJ Company (2011), “Composite Manhole Covers, a new revolution”, United States, Website: americas.ejco.com.
- AMPro Company (2009), “Manhole Cover Security Systems”, United States, Website:
www.ampro.us.
- FPMC Company (2011), “Precast concrete covers for gullies”, England, Website: fpmccann.co.uk.
- McGard Company (2012), “Manhole Security Products”, Canada, Website:
www.mcgard.com.
- R. J. Cliffs (2016), “ways cities are
clamping down on manhole cover theft”, MSW magazine, South Africa, December 2016, Website:
www.mswmag.com.
- Li Keqiang (2016), “gps-prevented manhole covers being stolen”, China, November 2016, Website:
www.meitrack.com.
- Siphiwe Sibeko (2015), “Manhole Cover Theft Solution”, South Africa, Website:
www.iol.co.za.
- SewerLock Company (2008), “Manhole Cover Security Products”, England, Website:
www.sewerlock.com.
- yohannes negasi (2012), “ Ductile iron and cast iron used to build manhole covers” , France.
- Jewson Company (2014), “Materials for building manhole covers”, England, Website: www.jewson.co.uk.
- Casting Sink Company (2011), “Aluminum Manhole Ring and cover”, Egypt, Website:
www.castingsinc.com.
- Kinammental Industry (2015), “Noiseless manhole covers”, Korea, Website: kinammetal.tradekorea.com.
- Wickes Company (2012), “Manhole Covers Problems”, England, Website:
www.wickes.co.uk.
- Pollard Water Company (2012), “Manhole Cover Cushion”, South Africa, Website:
www.pollardwater.com.
- Recessed Manhole Covers Company (2014), “Innovations in Manhole Covers Production”, England.
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