http://reply.papertrans.cn/4/306/30587/30587-31.png
Submitted on: 12 March 2012.
Revised on: 10 April 2012.
Accepted on: 22 April 2012.
WATER SA
http://reply.papertrans.cn/4/306/30587/30587-33.png
Submitted on: 17 December 2016.
Revised on: 19 January 2017.
Accepted on: 24 January 2017.
WATER SA---WATER RESEARCH COMMISSION
http://reply.papertrans.cn/4/306/30587/30587-35.png
http://reply.papertrans.cn/4/306/30587/30587-36.png