Worachat Wannawong, Usa W. Humphries, Prungchan Wongwises, Suphat Vongvisessomjai and Wiriya Lueangaram
American Journal of Environmental Sciences 6 ( 3 ): 280 - 285 , 2010
Prasertsak Ekphisutsuntorn, Prungchan Wongwises, Chaiyuth Chinnarasri, Suphat Vongvisessomjai and Jiang Zhu
American Journal of Environmental Sciences 6 ( 3 ): 299 - 307 , 2010
Prasertsak Ekphisutsuntorn, Prungchan Wongwises, Jiang Zhu and Suphat Vongvisessomjai
American Journal of Environmental Sciences 6 ( 4 ): 308 - 315 , 2010
Worachat Wannawong, Prungchan Wongwises and Usa W. Humphries
Journal of Mathematics and Statistics 6 ( 3 ): 286 - 293 , 2010
Sarinya Kirtphaiboon, Usa Humphries, Thidarat Bunsri and Prungchan Wongwises
Research Journal of Applied Sciences 13 ( 10 ): 587 - 593 , 2018