W.Kaminsky, A.M.Glazer: Comparison of experimental optical properties of TGS with calculations using the DES model. Phase Transitions 66 (1998) 1-21.
The recently-developed DES model (Kaminsky, W. and A.M Glazer, (1997). Z. Kristallogr. 212, 283-296) is applied to structures of triglycine sulfate at different temperatures. Tensors of electrogyration, linear and quadratic electro-optic effect are calculated and compared with the experimental values (Kaminsky, W. (1994). Phase Transitions 52, 235-259). Reasonable agreement in sign and magnitude is found for all relevant coefficients.