Sharma, Gopal, et al. “Synthesis, X-Ray Structure, and DFT Analysis of a Binary Complex of 3,3’-[(3-benzimidazolyl)methylene]bis(4-Hydroxy-2H-1-Benzopyran-2-one): 5-Methyl-1,3-Thiazol-2(3H)-Imine”. European Journal of Chemistry, vol. 11, no. 4, Dec. 2020, pp. 324-33, doi:10.5155/eurjchem.11.4.324-333.2028.