Kolosov, M. A., O. G. Kulyk, L. V. Chepelieva, and V. D. Orlov. “Ethylation of 5-Acetyl-5-Methyl-7-Phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine”. Kharkiv University Bulletin. Chemical Series, no. 22, Dec. 2013, pp. 39-44, doi:10.26565/2220-637X-2013-22-04.