Duan, H., and B. Shao. “A Multivariate Approach to Monitor the Quality of Chromatograms from Gas Chromatography Mass Spectrometry”. Asian Journal of Chemistry 24, no. 7 (March 13, 2012): 3133–3140. Accessed July 22, 2024. https://asianpubs.org/index.php/ajchem/article/view/9310.