## 1986 [Phonon localization in aggregates](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5569/aggregates.pdf) J. E. Graebner and B.Golding

- 1986 [Phonon localization in glasses](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5543/graebner.pdf)
J. E. Graebner, B. Golding, and L. C. Allen

## 1978 [The low-temperature thermal properties of amorphous arsenic](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5570/jones-thomas.pdf) D. P. Jones , N. Thomas & W. A. Phillips

> ....  High-frequency longitudinal modes may also contribute : if **the scattering by non-propagating ' transverse ' modes has any resonant character** (since both transverse and longitudinal modes have the same frequency), the scattering may well decrease as the longitudinal frequency increases. Careful calculations are, of course, necessary to establish **if the strength of this phonon-phonon scattering is sufficient to explain the plateau in K.**