1. S. V. Stovbun, Bull. Eksp. Biol. Med., 37, No. 6, 644–650 (2011).
2. V. M. Markov, New Criteria of the Degree of Symmetry and Chirality of Molecules [in Russian], Cand. Sci. (Chem.) Dissertation, Chelyabinsk (2001).
3. J. Maruani, G. Gilat, and R. Veysseyre, C. R. Acad. Sci., Ser. II, 319, No. 10, part l, 1165–1172 (1994).
4. G. Gilat and Y. Gordon, J. Math. Chem., 16, Nos. 1/2, 37–48 (1994).
5. G. Gilat, J. Math. Chem., 15, Nos. 1/2, 197–205 (1994).