First-principles local density functional calculations were made of the volume dilations and piezospectroscopic stress tensors for interstitial aggregates in diamond, in order to facilitate correlation with experimentally detected centers.

Volume Expansion and Stress Tensors for Self-Interstitial Aggregates in Diamond. J.P.Goss, R.Jones, P.R.Briddon: Physica B, 2001, 308-310, 604-7