Quantum fluctuations and density of states in low-dimensional superconductorsAlexey A. Radkevich, Andrew G. Semenov and Andrei D. ZaikinEur. Phys. J. Special Topics, 227 15-16 (2019) 2289-2295DOI: https://doi.org/10.1140/epjst/e2018-800046-x