WASET
Pangnakorn, U. , Tayamanont, P. , Kurubunjerdjit, R.. "Sweetpotato Organic Cultivation with Wood Vinegar, Entomopathogenic Nematode and Fermented Organic Substance from Plants". World Academy of Science, Engineering and Technology, Open Science Index 81, International Journal of Nutrition and Food Engineering (2013), 7(9), 854 - 858.