Magnon Bose–Einstein condensate and supercurrents over a wide temperature range - L. Mihalceanu; D. A. Bozhko; V. I. Vasyuchka; A. A. Serga; B. Hillebrands; A. Pomyalov; V. S. Lvov; V. S. Tyberkevych (Ukrainian journal of physics, 2019)