E.V. Manzhelii, S.B. Feodosyev, I.A. Gospodarev, E.S. Syrkin, and K.A. Minakova, Phonon spectrum and vibrational characteristics of linear nanostructures in solid matrices: 10th International Conference on Cryocrystals and Quantum Crystals (Final part), Low Temp. Phys. 41, (2015) [Fiz. Nizk. Temp. 41, 718-724, (2015)] DOI: https://doi.org/10.1063/1.4927047 .