## 1998 [Vibration anharmonicity and fast relaxation in the region of the glass transition](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5498/novikov.pdf) V. N. Novikov
- 1986 [Low temperature properties of glasses-unsolved problems - A K RAYCHAUDHURI](https://www.ias.ac.in/article/fulltext/jcsc/096/06/0559-0564)
## 2002 [Anharmonic Interactions and the Low-Temperature Thermal Anomalies in Glasses](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5497/anharmonic%2Bschirmarcher.pdf) W. Schirmacher1), M. Po¨hlmann, and E. Maurer
## 2020 [Sound damping in glasses: Interplay between anharmonicities and elastic heterogeneities](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5499/anharmonicity%2Band%2Bheterogeneity.pdf) Hideyuki Mizuno,Giancarlo Ruocco, and Stefano Mossa
## Anharmonicity - tutorial
[Lecture 9 — Anharmonic effects in crystals](https://www2.physics.ox.ac.uk/sites/default/files/CrystalStructure_Handout9_2.pdf)
[Lattice dynamics - anharmonic effects](https://www.theorphys.science.ru.nl/people/katsnelson/encyclop.pdf)
https://thesis.library.caltech.edu/10726/1/kim_dennis_2018_thesis.pdf