Microscopical theory, structure of superfluid component and elementary excitation spectrum of the non-relativistic Bose-liquid ⁴He von Pashitskij, E.A., Chumachenko, A.V., Vilchynskyi, S.I.

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The nature of superfuidity and Bose-Einstein condensation: from liquid ⁴He to dilute ultracold atomic gases (Review Article) von Vilchynskyy, S.I., Yakimenko, A.I., Isaieva, K.O., Chumachenko, A.V.

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