(1)
Orlov, V. D.; Udovicky, V. G.; Shishkin, O. V.; Kolos, N. N. 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. Khark. Univ. Bull. Chem. Ser. 2014, 75-81.