Calculations of Relativistic, Correlation, Nuclear, and Quantum-Electrodynamics Corrections to Energy and Ionization Potential of the Ground State of Helium-Like Ions. - Tupitsyn, I. I.; Bezborodov, S. V.; Malyshev, A. V.; Mironova, D. V.; Shabaev, V. M. (Optics & Spectroscopy, 2020)