1. N. P. Yuldasheva, D. A. Rakhimov, and E. S. Kondratenko, Khim. Prir. Soedin., No. 1, 114 (1985).
2. G. Determann, Gel Chromatography, Springer, New York (1968).
3. Yu. N. Kosaganov and É. N. Trifonov, Physical Methods of Investigating Proteins and Nucleic Acids [in Russian], Nauka, Moscow (1967), p. 238.
4. M. P. Filippov, Infrared Spectra of Pectin Substances [in Russian], Shtiintsa, Kishinev (1978).
5. A. G. Gorin, Khim. Prir. Soedin., No. 2, 80 (1967).