Rapid discrimination of three kinds of Radix Puerariae and their extracts by Fourier transform infrared spectroscopy and two-dimensional correlation infrared spectroscopy - Xu, B L; Zhang, G J; Sun, S Q; Xu, C H; Chen, J B; Tu, Y; Zhou, Q; Cui, M; Wang, J J; Wen, C X (J Mol Struct, 2012)