Sratthaphut, Lawan, Samart Jamrus, Suthikarn Woothianusorn, and Onoomar Toyama. 2013. “Principal Component Analysis Coupled With Artificial Neural Networks for Therapeutic Indication Prediction of Thai Herbal Formulae”. Science, Engineering and Health Studies 7 (1):41-48. https://doi.org/10.14456/sustj.2013.4.