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O.G. Chelpanova, Y.I. Kuriatnikov, S. Vilchinskii, and A.I. Yakimenko, Spatiotemporal vortex rings in atomic Bose–Einstein condensates, Low Temp. Phys. 45, (2019) [Fiz. Nizk. Temp. 45, 1061-1067, (2019)] DOI: https://doi.org/10.1063/1.5116542.