Gavrilina, V. A., and S. N. Sychev. “The Initial Hypothesis for Recognition of Physical-Chemical Multi-Component System Combination «high Performance Liquid Chromatography – Principal Component Method»”. Sorbtsionnye I Khromatograficheskie Protsessy, Vol. 12, no. 5, Nov. 2019, https://journals.vsu.ru/sorpchrom/article/view/1866.