“…These methods essentially are based on different strategies of mathematical strategies including specific formalism of mathematical statistics and of matrix algebra [Garrido et al, 2004;Szabadai, 2005]. The matrix-based methods reffer to quantitative analysis [Bosch-Reigh et al, 1991;Garrido et al, 2008;Li et al, 2011;Lozano et al, 2009;Ruckenbusch et al, 2006;Szabadai, 2005], to determination of the number of independent chemical equilibria in multicomponent systems [Szabadai, 2005] and for correction the action of various perturbing factors such as stray light or backgroud absorption [Burnius, 1959;Fox & Mueller, 1950;Melnick, 1952;Morton & Stubbs, 1946, 1947, 1948Owen, 1995;Page & Berkovitz, 1943;Szabadai, 2005].…”