Quesada-Espinoza, J. and Murillo-Masís, R. 2019. Quality control of phytopharmaceuticals with the use of Nuclear Magnetic Resonance (NMR) and the application of principal component analysis (PCA). Tecnología en marcha Journal. 32, 4 (Oct. 2019), Pág. 81–94. DOI:https://doi.org/10.18845/tm.v32i4.4794.