A.I. Yakimenko, O.I. Matsyshyn, A.O. Oliinyk, V.M. Biloshytskyi, O.G. Chelpanova, and S.I. Vilchynskii, Analogues of Josephson junctions and black hole event horizons in atomic Bose–Einstein condensates, Low Temp. Phys. 44, (2018) [Fiz. Nizk. Temp. 44, 1316-1325, (2018)] DOI: https://doi.org/10.1063/1.5055844.