P. A. Alekseev, J.-M. Mignot, P. S. Savchenkov, V. N. Lazukov, “First evidence for a Sm$^{3+}$-type contribution to the magnetic form factor in the quasielastic spectral response of intermediate valence SmB$_6$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 103:10 (2016), 720–726; JETP Letters, 103:10 (2016), 636–642
