1. Khimiya kompleksov “gost’-khozyain.” Sintez, struktury and primeneniya (Chemistry of Guest-Host Complexes, Synthesis, Structures and Application), Fëgtle, F. and Veber, E., Eds., Moscow: Mir, 1988.
2. Shannon, R.D., Acta Cryst. (A), 1976, vol. 32, no. 5, p. 751.
3. Pauling, L., The Nature of the Chemical Bond, New York, Ithaca: Cornell Univ. Press, 1960.
4. Bondi, A., J. Phys. Chem., 1964, vol. 68, no. 3, p. 441.
5. Batsanov, S.S., Zh. Neorg. Khim., 1991, vol. 36, no. 12, p. 3015.