UKM Atmospheric Chemistry and Air Pollution Research Group, 01 Feb 2015 http://link.springer.com/article/10.1007%2Fs11869-013-0224-9
UKM Atmospheric Chemistry and Air Pollution Research Group, 31 May 2014 http://link.springer.com/article/10.1007%2Fs11869-013-0224-9 New paper published with page number