1. A. I. Goncharov, V. V. Volkov, I. P. Petrov, et al., Zh. Anal. Khim.,37, No. 3, 470?473 (1982).
2. V. V. Voedovin, Computational Principles of Linear Algebra [in Russian], Nauka, Moscow (1977).
3. N. L. Johnson and F. C. Leone, Statistics and Experimental Design in Engineering and the Physical Sciences, Vols. 1 and 2, Wiley (1964).
4. F. J. Knorr and J. H. Futrell, Anal. Chem.,51, No. 8, 1236?1241.
5. J. C. Evans and P. H. Morgan, Anal. Chim. Acta,133, No. 3, 329?338 (1981).