Volume 19, Issue 9, September 2018, Pages 2475-2480
H M K Akalanka; S Ekanayake; K Samarasinghe
Volume 16, Issue 13, December 2015, Pages 5557-5563
Volume 15, Issue 22, December 2014, Pages 9841-9846
Volume 15, Issue 8, August 2014, Pages 3779-3784
Volume 13, Issue 12, December 2012, Pages 6295-6298
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