Impact of heteroatoms (S, Se, and Te) on the aromaticity of heterocirculenes / N. N. Karaush-Karmazin, G. V. Baryshnikov, L. I. Valiulina [et al.] // New journal of chemistry. 2019. Vol. 43, № 30. P. 12178-12190. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000673611