L. E. Svistov, T. Fujita, H. Yamaguchi, S. Kimura, K. Omura, A. Prokofiev, A. I. Smirnov, Z. Honda, M. Hagiwara, “New high magnetic field phase of the frustrated $S=1/2$ chain compound LiCuVO$_4$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 93:1 (2011), 24–28; JETP Letters, 93:1 (2011), 21–25
