Orlov, Valeriy D., V. G. Udovicky, Oleg V. Shishkin, and Nadiia N. Kolos. 2014. “Peculiarities of Complexes Based on dibenzo[b, I]-1,4,8,11-tetraaza[14]annulene. The Crystal and Molecular Structure of nickel(II) Complex 5,7,12,14-Tetramethyl-6,13-dibenzoyldibenzo[b,i]-1,4,8,11-tetraaza[14]annulene”. Kharkiv University Bulletin. Chemical Series, no. 24 (October), 75-81. https://doi.org/10.26565/2220-637X-2014-24-08.