Erratum S.R. Elliott, Use of the modulus formalism in the analysis of ac conductivity data for ionic glasses, J. Non-Cryst. Solids 170 (1994) 97-100.
It has been brought to my attention that, prior to the publication of the above Commentary, Doi [1] had also criticised the modulus approach, albeit from a different point of view. Due to a regrettable over-
sight, this earlier reference was not cited in the Commentary. [1] A. Doi, Solid State Ionics 31 (1988) 227.