Denisenko D.Yu., Bugakova A.V., Prokopenko N.N., Ivanov Yu.I. The Third Order Active Low-Pass RC-Filters Based on Differential and Differential Difference Operational Amplifiers. 20th IEEE International Conference on Micro/Nanotechnologies and Electron Devices (EDM). Erlagol, June 29 - July 3, 2019. Pp. 695-699. DOI: 10.1109/EDM.2019.8823488 (Scopus)