Errata for Ch 16., "Covariant Isotropic Constitutive Relations in Clifford's Geometric Algebra" by P. Puska, pp. 413-428, in PIER 32: Geometric Methods for Computational Electromagnetics, F. L. Teixeira and J. A. Kong (eds.), EMW Publishing, Cambridge MA, 2001.

p. 415, first displaymath equation should read

$$\begin{eqnarray*}\char93 e_1^2 = \char93 e_2^2 =\char93 e_3^2 = 1, &&\char93 ... ...u \char93 e_\lambda & & {\mbox {\rm for} }\ \ \lambda\neq \nu. \end{eqnarray*}$$