Finite-size effects in the two-dimensional negative- u hubbard model.D. BormannT. Schneideret al.2007EPLPaper
Attractive Hubbard model in the strong-coupling regime. Relation between transition temperature, magnetic penetration depth and gapT. SchneiderH. Becket al.1993Physica C: Superconductivity and its applicationsPaper
Quantum size effects in the attractive hubbard modelD. BormannT. Schneideret al.1992Zeitschrift für Physik B Condensed MatterPaper