N. Bogdan, O. Ivanysenko, S. Sujkov, H. Yakovleva, O. Shved, and S. Bogza, “Simple synthesis of heterocyclic benzo[f]azulene isosters. Construction of a 2-benzazepine fragment in the Pictet—Spengler reaction”, Dopov. Nac. akad. nauk Ukr., no. 1, pp. 92–98, Mar. 2022.