S.N. Shevchenko, A.S. Kiyko, A.N. Omelyanchouk, and W. Krech, Dynamic behavior of Josephson-junction qubits: crossover between Rabi oscillations and Landau-Zener transitions, Low Temp. Phys. 31, (2005) [Fiz. Nizk. Temp. 31, 752-760, (2005)] DOI: https://doi.org/10.1063/1.2001634.