2013. Analysis of current sources on the operational amplifiers according to their precision requirements in a wide frequency range for Electrical Impedance Tomography problems. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia. 54 (Nov. 2013), 24–32. DOI:https://doi.org/10.20535/RADAP.2013.54.24-32.