E. V. Vybornyi, S. V. Rumyantseva, “Semiclassical Asymptotics of Oscillating Tunneling for a Quadratic Hamiltonian on the Algebra su(1,1)”, Mathematical Notes, 112:5 (2022), 642–655
E. V. Vybornyi, S. V. Rumyantseva, “Semiclassical Asymptotics of Oscillating Tunneling for a Quadratic Hamiltonian on the Algebra $\operatorname{su}(1,1)$”, Mat. Zametki, 112:5 (2022), 665–681; Math. Notes, 112:5 (2022), 642–655