M. V. Budnikova, D. B. Rubinov, L. G. Lis, A. L. Mikhal'chuk, “Heteroannelation of 3,4-dihydroisoquinoline with (3H,5H)-3-acylthiophene-2,4-diones: one-stage synthesis of new heterocyclic steroid analogues, 8-aza-16-thiagonanes”, Mendeleev Commun., 9:5 (1999), 208–209
