Denisenko D.Yu., Prokopenko N.N., Butyrlagin N.V. Differential Difference Amplifiers in the Second Order Low-Sensitive All-Pass Active RC-Filters. International Conference on Computation, Automation and Knowledge Management (ICCAKM). 2020. Dubai. Pp. 275-279. DOI: 10.1109/ICCAKM46823.2020.9051558 (Scopus)