(1)
Bogdan, N. M.; Bogza, S. L.; Nikolyukin, Y. A. Acylation of Indolyl Subsituted β-Ketonitriles. The Way to New indolo[2,3-c]pyrilium and β-Carboline Derivatives. J. Org. Pharm. Chem. 2020, 18, 23-27.