Luniov, S.V., Burban, O.V. and Nazarchuk, P.F. 2019. Calculation of the Ground-State Ionization Energy for Shallow Donors in n-Ge Single Crystals within the Δ1-Model for the Conduction Band. Ukrainian Journal of Physics. 60, 10 (Jan. 2019), 1022. DOI:https://doi.org/10.15407/ujpe60.10.1022.